Alexandros Sfakianakis
Anapafseos 5 . Agios Nikolaos
Crete.Greece.72100
2841026182
Anapafseos 5 . Agios Nikolaos
Crete.Greece.72100
2841026182
6948891480
Δευτέρα 8 Μαΐου 2017
I strongly recommend that all practicing physicians consider such a list, and review it occasionally. I wish for the judgement to know what is best for my patients and to weigh the merits of interventions; surgically, medically, and radiotherapeutically. I wish that I can master the complexities of the practice of medicine and be worthwhile as a physician. I wish for the honesty and integrity to objectively assess my competencies and fallibilities. I wish for the intellectual drive to maintain currency of knowledge. I wish for the wisdom to assess and maintain appropriate costs for medical care. I wish for the integrity to avoid marketing my skills and accomplishments unrealistically and erroneously. I wish for the compassion that allows me to separate my personal problems from the needs of the patients that I serve. I wish for the courage to challenge the wisdom of those that create policies and regulations that fail to consider the full dimension and scope of medical care. Please p
Can segmental model reductions quantify whole-body balance accurately during dynamic activities?
Publication date: July 2017
Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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How Humans Use Visual Optic Flow to Regulate Stepping During Walking
Publication date: Available online 8 May 2017
Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Can segmental model reductions quantify whole-body balance accurately during dynamic activities?
Publication date: July 2017
Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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How Humans Use Visual Optic Flow to Regulate Stepping During Walking
Publication date: Available online 8 May 2017
Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Can segmental model reductions quantify whole-body balance accurately during dynamic activities?
Publication date: July 2017
Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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Source:Gait & Posture, Volume 56
Author(s): Parunchaya Jamkrajang, Mark A. Robinson, Weerawat Limroongreungrat, Jos Vanrenterghem
When investigating whole-body balance in dynamic tasks, adequately tracking the whole-body centre of mass (CoM) or derivatives such as the extrapolated centre of mass (XCoM) can be crucial but add considerable measurement efforts. The aim of this study was to investigate whether reduced kinematic models can still provide adequate CoM and XCoM representations during dynamic sporting tasks. Seventeen healthy recreationally active subjects (14 males and 3 females; age, 24.9±3.2years; height, 177.3±6.9cm; body mass 72.6±7.0kg) participated in this study. Participants completed three dynamic movements, jumping, kicking, and overarm throwing. Marker-based kinematic data were collected with 10 optoelectronic cameras at 250Hz (Oqus Qualisys, Gothenburg, Sweden). The differences between (X)CoM from a full-body model (gold standard) and (X)CoM representations based on six selected model reductions were evaluated using a Bland-Altman approach. A threshold difference was set at ±2cm to help the reader interpret which model can still provide an acceptable (X)CoM representation. Antero-posterior and medio-lateral displacement profiles of the CoM representation based on lower limbs, trunk and upper limbs showed strong agreement, slightly reduced for lower limbs and trunk only. Representations based on lower limbs only showed less strong agreement, particularly for XCoM in kicking. Overall, our results provide justification of the use of certain model reductions for specific needs, saving measurement effort whilst limiting the error of tracking (X)CoM trajectories in the context of whole-body balance investigation.
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How Humans Use Visual Optic Flow to Regulate Stepping During Walking
Publication date: Available online 8 May 2017
Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Source:Gait & Posture
Author(s): Mandy M. Salinas, Jason M. Wilken, Jonathan B. Dingwell
Humans use visual optic flow to regulate average walking speed. Among many possible strategies available, healthy humans walking on motorized treadmills allow fluctuations in stride length (Ln) and stride time (Tn) to persist across multiple consecutive strides, but rapidly correct deviations in stride speed (Sn=Ln/Tn) at each successive stride, n. Several experiments verified this stepping strategy when participants walked with no optic flow. This study determined how removing or systematically altering optic flow influenced peoples’ stride-to-stride stepping control strategies. Participants walked on a treadmill with a virtual reality (VR) scene projected onto a 3m tall, 180° semi-cylindrical screen in front of the treadmill. Five conditions were tested: blank screen (“BLANK”), static scene (“STATIC”), or moving scene with optic flow speed slower than (“SLOW”), matched to (“MATCH”), or faster than (“FAST”) walking speed. Participants took shorter and faster strides and demonstrated increased stepping variability during the BLANK condition compared to the other conditions. Thus, when visual information was removed, individuals appeared to walk more cautiously. Optic flow influenced both how quickly humans corrected stride speed deviations and how successful they were at enacting this strategy to try to maintain approximately constant speed at each stride. These results were consistent with Weber’s law: healthy adults more-rapidly corrected stride speed deviations in a no optic flow condition (the lower intensity stimuli) compared to contexts with non-zero optic flow. These results demonstrate how the temporal characteristics of optic flow influence ability to correct speed fluctuations during walking.
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Dynamics of the Driving Force During the Normal Vocal Fold Vibration Cycle
Source:Journal of Voice
Author(s): Philippe Henri DeJonckere, Jean Lebacq, Ingo R. Titze
Intraglottal pressure is the driving force of vocal fold vibration. Theoretically, simultaneous quantification of glottal area and transglottal airflow allows the calculation of the intraglottal pressure waveform during a single vibration cycle. In this study, we show that, by combining photoglottography (transglottal light transmission) and airflow (Rothenberg mask) measurements during sustained vocal emissions in vivo, the intraglottal pressure wave can be approximated in a way similar to what has been done in models. The results confirm in vivo that the intraglottal pressure is systematically larger during the opening phase than during the closing phase, so that over one whole cycle, the driving force performs net positive work, accounting for sustained vocal fold motion. A component of this driving force asymmetry is related to vocal tract inertance, which also accounts for the skewing of the airflow waveform compared with the area waveform. Furthermore, the intraglottal pressure ratio (opening:closing) increases with voicing intensity, reaches a maximum around 76 dB, and significantly decreases at higher intensities. This rise and fall suggests that there is a range of intensity values in which, mechanically, a maximum of the driving force is imparted to the vocal fold mass. This finding could have implications for voice economy in professional speakers.
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Vocal Change Patterns During a Teaching Day: Inter- and Intra-Subject Variability
Source:Journal of Voice
Author(s): Angélique Remacle, Maëva Garnier, Silvain Gerber, Claire David, Caroline Petillon
ObjectivesThe study aimed to describe the average response of 22 female teachers to vocal fatigue during a workday, to examine their inter- and intra-subject variability, and to establish a typology of different responses to vocal fatigue.MethodsFundamental frequency (F0), harmonics-to-noise ratio (HNR), jitter, and shimmer were measured for each participant on sustained vowels at the beginning and at the end of the workday, on three different times of the school year.ResultsGroup average variations during the workday showed a significant increase in F0 and HNR, as well as a significant decrease in jitter and shimmer. However, these variations also showed an important inter- and intra-subject variability. Based on the variation of acoustic parameters during the workday, three distinct responses to vocal fatigue were characterized. The first type is characterized by a greater F0 increase during the day, interpreted as an adequate and common adaptation to vocal fatigue. The second type is characterized by a greater increase in HNR during the day, and a greater decrease in jitter and shimmer, interpreted as a hyperfunctional adaptation to vocal fatigue. The third type is characterized by a greater decrease in F0 and HNR, and a greater increase in jitter and shimmer, suggesting vocal fold closure defaults, inflammation or even phonotrauma following the workday.ConclusionsThe observed variety of responses to vocal fatigue emphasizes the necessity to study this phenomenon idiosyncratically and to target different types of behaviors in order to develop tailored prevention and treatment methods.
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Flow Glottogram and Subglottal Pressure Relationship in Singers and Untrained Voices
Source:Journal of Voice
Author(s): Johan Sundberg
This article combines results from three earlier investigations of the glottal voice source during phonation at varying degrees of vocal loudness (1) in five classically trained baritone singers (Sundberg et al., 1999), (2) in 15 female and 14 male untrained voices (Sundberg et al., 2005), and (3) in voices rated as hyperfunctional by an expert panel (Millgård et al., 2015). Voice source data were obtained by inverse filtering. Associated subglottal pressures were estimated from oral pressure during the occlusion for the consonant /p/. Five flow glottogram parameters, (1) maximum flow declination rate (MFDR), (2) peak-to-peak pulse amplitude, (3) level difference between the first and the second harmonics of the voice source, (4) closed quotient, and (5) normalized amplitude quotient, were averaged across the singer subjects and related to associated MFDR values. Strong, quantitative relations, expressed as equations, are found between subglottal pressure and MFDR and between MFDR and each of the other flow glottogram parameters. The values for the untrained voices, as well as those for the voices rated as hyperfunctional, deviate systematically from the values derived from the equations.
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Bone Anchored Hearing Implant Surgery: 1 Year Follow-Up Data Shows No Effect of Hydroxyapatite Coating on Soft Tissue Reaction after Loading at 1 Week.
Objective: To assess postoperative skin complications around a bone anchored hearing implant (BAHI) abutment coated with hydroxyapatite and loaded after 1 week. Design: Single center, prospective cohort study of 25 adults with expected normal skin and bone quality. Intervention: Implantation of the Baha BA400 hydroxyapatite coated implant system using a linear incision technique without soft tissue reduction. Abutments with lengths of 8 mm (n = 9), 10 mm (n = 11), and 12 mm (n = 5) were used. The implants were loaded after 7 days (n = 23), 8 days (n = 1), and 12 days (n = 1). Main Outcome Measures: Soft tissue evaluation (Holger's score, skin overgrowth, pain, numbness) at 7 (+/-2), 14 (+/-3), and 30 (+/-7) days and 3 months (+/-14 days), 6 months (+/-14 days), and 12 months (+/-30 days). The results were compared with a historic control group. Results: Twenty five patients were included, 23 could be followed up for 1 year. In 93.8% of the visits, patients had a Holger's score less than or equal to 1. One patient needed revision surgery due to skin overgrowth. 18.8% of the patients experienced mild pain during follow-up, primarily during the first month. Sensibility loss was very limited. Compared with similar patients having the smooth titanium abutment (loaded at 2 wk), there was a slightly increased level of short-term soft tissue reaction. Conclusion: The study shows a small, non-detrimental, negative effect on short-term soft tissue status after loading of the implant at 7 days. No positive effect from the hydroxyapatite coating could be demonstrated for the long-term soft tissue status. Copyright (C) 2017 by Otology & Neurotology, Inc. Image copyright (C) 2010 Wolters Kluwer Health/Anatomical Chart Company
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Round Window Application of an Active Middle Ear Implant: a Comparison With Hearing Aid Usage in Japan.
Objective: To report on the safety and efficacy of an investigational active middle ear implant (AMEI) in Japan, and to compare results to preoperative results with a hearing aid. Design: Prospective study conducted in Japan in which 23 Japanese-speaking adults suffering from conductive or mixed hearing loss received a VIBRANT SOUNDBRIDGE with implantation at the round window. Postoperative thresholds, speech perception results (word recognition scores, speech reception thresholds, signal-to-noise ratio [SNR]), and quality of life questionnaires at 20 weeks were compared with preoperative results with all patients receiving the same, best available hearing aid (HA). Results: Statistically significant improvements in postoperative AMEI-aided thresholds (1, 2, 4, and 8 kHz) and on the speech reception thresholds and word recognition scores tests, compared with preoperative HA-aided results, were observed. On the SNR, the subjects' mean values showed statistically significant improvement, with -5.7 dB SNR for the AMEI-aided mean and -2.1 dB SNR for the preoperative HA-assisted mean. The APHAB quality of life questionnaire also showed statistically significant improvement with the AMEI. Conclusion: Results with the AMEI applied to the round window exceeded those of the best available hearing aid in speech perception as well as quality of life questionnaires. There were minimal adverse events or changes to patients' residual hearing. This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://ift.tt/OBJ4xP Copyright (C) 2017 by Otology & Neurotology, Inc. Image copyright (C) 2010 Wolters Kluwer Health/Anatomical Chart Company
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Prevalence of Auditory Problems in Children With Feeding and Swallowing Disorders
Purpose
Although an interdisciplinary approach is recommended for assessment and management of feeding or swallowing difficulties, audiologists are not always included in the interdisciplinary team. The purpose of this study is to report the prevalence of middle ear and hearing problems in children with feeding and swallowing disorders and to compare this prevalence with that in typical children.
Method
A total of 103 children were included in the study: 44 children with feeding and swallowing disorders and 59 children without any such disorders. Audiological examinations included case-history information, visualization of the ear canals through otoscopy, middle ear evaluation through tympanometry, and hearing screenings using an audiometer.
Results
The odds of excessive cerumen (p = .0000, small effect size), middle ear dysfunction (p = .0148, small effect size), and hearing screening failure (p = .0000, large effect size) were 22.14%, 2.97%, and 13.5% higher, respectively, in children with feeding and swallowing disorders compared with typically developing children.
Conclusion
The significantly higher prevalence of hearing problems in children with feeding and swallowing disorders compared with typically developing children suggests that inclusion of an audiologist on the interdisciplinary team is likely to improve overall interventional outcomes for children with feeding and swallowing disorders.from #Audiology via xlomafota13 on Inoreader http://ift.tt/2ps2Nnn
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Language Development and Brain Magnetic Resonance Imaging Characteristics in Preschool Children With Cerebral Palsy
Purpose
The purpose of this study was to investigate characteristics of language development in relation to brain magnetic resonance imaging (MRI) characteristics and the other contributing factors to language development in children with cerebral palsy (CP).
Method
The study included 172 children with CP who underwent brain MRI and language assessments between 3 and 7 years of age. The MRI characteristics were categorized as normal, malformation, periventricular white matter lesion (PVWL), deep gray matter lesion, focal infarct, cortical/subcortical lesion, and others. Neurodevelopmental outcomes such as ambulatory status, manual ability, cognitive function, and accompanying impairments were assessed.
Results
Both receptive and expressive language development quotients (DQs) were significantly related to PVWL or deep gray matter lesion severity. In multivariable analysis, only cognitive function was significantly related to receptive language development, whereas ambulatory status and cognitive function were significantly associated with expressive language development. More than one third of the children had a language developmental discrepancy between receptive and expressive DQs. Children with cortical/subcortical lesions were at high risk for this discrepancy.
Conclusions
Cognitive function is a key factor for both receptive and expressive language development. In children with PVWL or deep gray matter lesion, lesion severity seems to be useful to predict language development.from #Audiology via xlomafota13 on Inoreader http://ift.tt/2pUDOLK
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Prevalence of Auditory Problems in Children With Feeding and Swallowing Disorders
Purpose
Although an interdisciplinary approach is recommended for assessment and management of feeding or swallowing difficulties, audiologists are not always included in the interdisciplinary team. The purpose of this study is to report the prevalence of middle ear and hearing problems in children with feeding and swallowing disorders and to compare this prevalence with that in typical children.
Method
A total of 103 children were included in the study: 44 children with feeding and swallowing disorders and 59 children without any such disorders. Audiological examinations included case-history information, visualization of the ear canals through otoscopy, middle ear evaluation through tympanometry, and hearing screenings using an audiometer.
Results
The odds of excessive cerumen (p = .0000, small effect size), middle ear dysfunction (p = .0148, small effect size), and hearing screening failure (p = .0000, large effect size) were 22.14%, 2.97%, and 13.5% higher, respectively, in children with feeding and swallowing disorders compared with typically developing children.
Conclusion
The significantly higher prevalence of hearing problems in children with feeding and swallowing disorders compared with typically developing children suggests that inclusion of an audiologist on the interdisciplinary team is likely to improve overall interventional outcomes for children with feeding and swallowing disorders.from #Audiology via ola Kala on Inoreader http://ift.tt/2ps2Nnn
via IFTTT
Language Development and Brain Magnetic Resonance Imaging Characteristics in Preschool Children With Cerebral Palsy
Purpose
The purpose of this study was to investigate characteristics of language development in relation to brain magnetic resonance imaging (MRI) characteristics and the other contributing factors to language development in children with cerebral palsy (CP).
Method
The study included 172 children with CP who underwent brain MRI and language assessments between 3 and 7 years of age. The MRI characteristics were categorized as normal, malformation, periventricular white matter lesion (PVWL), deep gray matter lesion, focal infarct, cortical/subcortical lesion, and others. Neurodevelopmental outcomes such as ambulatory status, manual ability, cognitive function, and accompanying impairments were assessed.
Results
Both receptive and expressive language development quotients (DQs) were significantly related to PVWL or deep gray matter lesion severity. In multivariable analysis, only cognitive function was significantly related to receptive language development, whereas ambulatory status and cognitive function were significantly associated with expressive language development. More than one third of the children had a language developmental discrepancy between receptive and expressive DQs. Children with cortical/subcortical lesions were at high risk for this discrepancy.
Conclusions
Cognitive function is a key factor for both receptive and expressive language development. In children with PVWL or deep gray matter lesion, lesion severity seems to be useful to predict language development.from #Audiology via ola Kala on Inoreader http://ift.tt/2pUDOLK
via IFTTT
Prevalence of Auditory Problems in Children With Feeding and Swallowing Disorders
Purpose
Although an interdisciplinary approach is recommended for assessment and management of feeding or swallowing difficulties, audiologists are not always included in the interdisciplinary team. The purpose of this study is to report the prevalence of middle ear and hearing problems in children with feeding and swallowing disorders and to compare this prevalence with that in typical children.
Method
A total of 103 children were included in the study: 44 children with feeding and swallowing disorders and 59 children without any such disorders. Audiological examinations included case-history information, visualization of the ear canals through otoscopy, middle ear evaluation through tympanometry, and hearing screenings using an audiometer.
Results
The odds of excessive cerumen (p = .0000, small effect size), middle ear dysfunction (p = .0148, small effect size), and hearing screening failure (p = .0000, large effect size) were 22.14%, 2.97%, and 13.5% higher, respectively, in children with feeding and swallowing disorders compared with typically developing children.
Conclusion
The significantly higher prevalence of hearing problems in children with feeding and swallowing disorders compared with typically developing children suggests that inclusion of an audiologist on the interdisciplinary team is likely to improve overall interventional outcomes for children with feeding and swallowing disorders.from #Audiology via ola Kala on Inoreader http://ift.tt/2ps2Nnn
via IFTTT
Language Development and Brain Magnetic Resonance Imaging Characteristics in Preschool Children With Cerebral Palsy
Purpose
The purpose of this study was to investigate characteristics of language development in relation to brain magnetic resonance imaging (MRI) characteristics and the other contributing factors to language development in children with cerebral palsy (CP).
Method
The study included 172 children with CP who underwent brain MRI and language assessments between 3 and 7 years of age. The MRI characteristics were categorized as normal, malformation, periventricular white matter lesion (PVWL), deep gray matter lesion, focal infarct, cortical/subcortical lesion, and others. Neurodevelopmental outcomes such as ambulatory status, manual ability, cognitive function, and accompanying impairments were assessed.
Results
Both receptive and expressive language development quotients (DQs) were significantly related to PVWL or deep gray matter lesion severity. In multivariable analysis, only cognitive function was significantly related to receptive language development, whereas ambulatory status and cognitive function were significantly associated with expressive language development. More than one third of the children had a language developmental discrepancy between receptive and expressive DQs. Children with cortical/subcortical lesions were at high risk for this discrepancy.
Conclusions
Cognitive function is a key factor for both receptive and expressive language development. In children with PVWL or deep gray matter lesion, lesion severity seems to be useful to predict language development.from #Audiology via ola Kala on Inoreader http://ift.tt/2pUDOLK
via IFTTT
20Q: Acoustics 101 with a Dash of 201
A discussion of common acoustics terms, principles and phenomena and their relationship to audiology clinical practice, in an engaging Q & A format. 
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2pVFEN8
via IFTTT
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2pVFEN8
via IFTTT
20Q: Acoustics 101 with a Dash of 201
A discussion of common acoustics terms, principles and phenomena and their relationship to audiology clinical practice, in an engaging Q & A format.
from #Audiology via ola Kala on Inoreader http://ift.tt/2pVFEN8
via IFTTT
from #Audiology via ola Kala on Inoreader http://ift.tt/2pVFEN8
via IFTTT
20Q: Acoustics 101 with a Dash of 201
A discussion of common acoustics terms, principles and phenomena and their relationship to audiology clinical practice, in an engaging Q & A format.
from #Audiology via ola Kala on Inoreader http://ift.tt/2pVFEN8
via IFTTT
from #Audiology via ola Kala on Inoreader http://ift.tt/2pVFEN8
via IFTTT
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