Objective: The objective of the study was to compare rotary chair and video head impulse test (vHIT) findings in patients with bilateral vestibular hypofunction (BVH) to determine whether vHIT can: 1) define severity of BVH and 2) accurately predict rotary chair findings in patients with BVH. Study Design: Retrospective chart review. Setting: Research hospital. Patients: Twenty subjects with bilateral vestibular hypofunction as assessed by rotary chair. Intervention: Rotary chair and vHIT. Main Outcome Measures: The main outcome measures were rotary chair phase, gain, and symmetry and vHIT vestibulo-ocular reflex (VOR) gain. Rotary chair and vHIT results were assessed and subjects were stratified into groups according to the severity of their vestibular hypofunction. For rotary chair, subjects were classified as mild, moderate, or severe BVH. For vHIT, subjects were classified as normal, unilateral, or bilateral. Results: Average lateral canal vHIT VOR gain: 1) significantly increased as severity of BVH decreased, and 2) demonstrated a significant and positive, linear relationship with rotary chair gains. vHIT was in disagreement with rotary chair in the classification of five subjects, which could be due to right-left asymmetry of BVH. Conclusion: vHIT can serve as an initial tool for identifying patients with BVH. Lower vHIT gains are consistent with having severe BVH. There was disagreement between vHIT and rotary chair, though not for any patients with severe BVH. Compared with rotary chair, the clinical gold standard for identifying BVH, vHIT possesses 100% sensitivity for excluding severe BVH when average vHIT gains are greater than 0.46. Copyright (C) 2017 by Otology & Neurotology, Inc. Image copyright (C) 2010 Wolters Kluwer Health/Anatomical Chart Company
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Παρασκευή 10 Φεβρουαρίου 2017
Signia Expands Power Series Selections for Severe to Profound Hearing Loss
Following the introduction of the Power Series with the Motion P BTE and Cellion hearing aids last fall, Signia (http://ift.tt/29sqzaU) has added two more hearing aids, Signia Carat and Motion SP, to the line. Signia Carat is a receiver-in-canal device that sits almost invisibly behind the ear and uses a standard size 13 battery. It also comes with a rechargeable option. Motion SP is a behind-the-ear hearing aid that uses a 675 size battery and amplifies sounds up to 82/140 dB.
Like other hearing aids in the Power series, both new devices operate on Signia's primax platform, which features low power consumption and advanced binaural sound processing technology, and are equipped with the SpeechMaster and Narrow Directionality features, allowing users to understand speech in noisy environments and in settings where there are competing speech signals. All Power Series hearing aids are compatible with the touchControl smartphone app, eastTek audio streamer, east Tek app, and the recently launched Signia TeleCare and myHearing apps.
Published: 2/10/2017 12:11:00 PM
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Signia Expands Power Series Selections for Severe to Profound Hearing Loss
Following the introduction of the Power Series with the Motion P BTE and Cellion hearing aids last fall, Signia (http://ift.tt/29sqzaU) has added two more hearing aids, Signia Carat and Motion SP, to the line. Signia Carat is a receiver-in-canal device that sits almost invisibly behind the ear and uses a standard size 13 battery. It also comes with a rechargeable option. Motion SP is a behind-the-ear hearing aid that uses a 675 size battery and amplifies sounds up to 82/140 dB.
Like other hearing aids in the Power series, both new devices operate on Signia's primax platform, which features low power consumption and advanced binaural sound processing technology, and are equipped with the SpeechMaster and Narrow Directionality features, allowing users to understand speech in noisy environments and in settings where there are competing speech signals. All Power Series hearing aids are compatible with the touchControl smartphone app, eastTek audio streamer, east Tek app, and the recently launched Signia TeleCare and myHearing apps.
Published: 2/10/2017 12:11:00 PM
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Signia Expands Power Series Selections for Severe to Profound Hearing Loss
Following the introduction of the Power Series with the Motion P BTE and Cellion hearing aids last fall, Signia (http://ift.tt/29sqzaU) has added two more hearing aids, Signia Carat and Motion SP, to the line. Signia Carat is a receiver-in-canal device that sits almost invisibly behind the ear and uses a standard size 13 battery. It also comes with a rechargeable option. Motion SP is a behind-the-ear hearing aid that uses a 675 size battery and amplifies sounds up to 82/140 dB.
Like other hearing aids in the Power series, both new devices operate on Signia's primax platform, which features low power consumption and advanced binaural sound processing technology, and are equipped with the SpeechMaster and Narrow Directionality features, allowing users to understand speech in noisy environments and in settings where there are competing speech signals. All Power Series hearing aids are compatible with the touchControl smartphone app, eastTek audio streamer, east Tek app, and the recently launched Signia TeleCare and myHearing apps.
Published: 2/10/2017 12:11:00 PM
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Current Methods of Evaluating Speech-Language Outcomes for Preschoolers With Communication Disorders: A Scoping Review Using the ICF-CY
Purpose
The purpose of this scoping review was to identify current measures used to evaluate speech-language outcomes for preschoolers with communication disorders within the framework of the International Classification of Functioning, Disability and Health–Children and Youth Version (ICF-CY; World Health Organization, 2007).
Method
The review involved 5 phases outlined by Arksey and O'Malley (2005) and further developed by Levac, Colquhoun, and O'Brien (2010): (a) articulating the research question; (b) identifying relevant studies; (c) selecting studies; (d) charting the data; and (e) collating, summarizing, and reporting the results. The ICF-CY was used to frame the measures included.
Results
A total of 214 relevant peer-reviewed publications were included in the review. Most publications used measures to evaluate changes in outcomes for Activities (65%), followed by measures evaluating changes in Body Functions (20%), and finally measures evaluating changes at the level of Participation (15%). There has been a slight increase in the evaluation of Participation-based outcomes in the past 4 years (2012–2015).
Conclusion
The review revealed a dearth of measures in the pediatric speech-language literature that address Participation-based outcomes. The authors strongly advocate for the use of Participation-based outcome measures to detect meaningful change in the lives of children and families.from #Audiology via ola Kala on Inoreader http://ift.tt/2lzIGBZ
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Growth of Expressive Syntax in Children With Fragile X Syndrome
Purpose
This research explored syntactic growth in children with fragile X syndrome (FXS) over a 5-year period, and variability in growth in relation to autism symptoms, nonverbal cognition, maternal responsivity, and gender.
Method
Language samples at 4 time points from 39 children with FXS, 31 boys and 8 girls, were analyzed using the Index of Productive Syntax (Scarborough, 1990) and mean length of utterance (Brown, 1973). The degree of autism symptoms was evaluated using the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1988) at the first time point. Maternal responsivity estimates were averaged across time points.
Results
Children with FXS showed significant syntactic growth over time and a significant plateau (quadratic trend) in the later observations. Children who exhibited more autism symptoms at Time 1 had significantly lower syntactic abilities over time than children who exhibited fewer autism symptoms. Nonverbal cognition significantly predicted mean length of utterance scores but not Index of Productive Syntax scores. Maternal responsivity was not a significant predictor of syntactic outcomes. Girls with FXS generally demonstrated better expressive syntax than boys with FXS with notable individual differences.
Conclusion
Despite significant growth over time, expressive syntax is a vulnerable domain for children with FXS, especially for those with severe autism symptoms. Clinical implications arising from the current findings are discussed.from #Audiology via ola Kala on Inoreader http://ift.tt/2lsEXt1
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Current Methods of Evaluating Speech-Language Outcomes for Preschoolers With Communication Disorders: A Scoping Review Using the ICF-CY
Purpose
The purpose of this scoping review was to identify current measures used to evaluate speech-language outcomes for preschoolers with communication disorders within the framework of the International Classification of Functioning, Disability and Health–Children and Youth Version (ICF-CY; World Health Organization, 2007).
Method
The review involved 5 phases outlined by Arksey and O'Malley (2005) and further developed by Levac, Colquhoun, and O'Brien (2010): (a) articulating the research question; (b) identifying relevant studies; (c) selecting studies; (d) charting the data; and (e) collating, summarizing, and reporting the results. The ICF-CY was used to frame the measures included.
Results
A total of 214 relevant peer-reviewed publications were included in the review. Most publications used measures to evaluate changes in outcomes for Activities (65%), followed by measures evaluating changes in Body Functions (20%), and finally measures evaluating changes at the level of Participation (15%). There has been a slight increase in the evaluation of Participation-based outcomes in the past 4 years (2012–2015).
Conclusion
The review revealed a dearth of measures in the pediatric speech-language literature that address Participation-based outcomes. The authors strongly advocate for the use of Participation-based outcome measures to detect meaningful change in the lives of children and families.from #Audiology via ola Kala on Inoreader http://ift.tt/2lzIGBZ
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Growth of Expressive Syntax in Children With Fragile X Syndrome
Purpose
This research explored syntactic growth in children with fragile X syndrome (FXS) over a 5-year period, and variability in growth in relation to autism symptoms, nonverbal cognition, maternal responsivity, and gender.
Method
Language samples at 4 time points from 39 children with FXS, 31 boys and 8 girls, were analyzed using the Index of Productive Syntax (Scarborough, 1990) and mean length of utterance (Brown, 1973). The degree of autism symptoms was evaluated using the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1988) at the first time point. Maternal responsivity estimates were averaged across time points.
Results
Children with FXS showed significant syntactic growth over time and a significant plateau (quadratic trend) in the later observations. Children who exhibited more autism symptoms at Time 1 had significantly lower syntactic abilities over time than children who exhibited fewer autism symptoms. Nonverbal cognition significantly predicted mean length of utterance scores but not Index of Productive Syntax scores. Maternal responsivity was not a significant predictor of syntactic outcomes. Girls with FXS generally demonstrated better expressive syntax than boys with FXS with notable individual differences.
Conclusion
Despite significant growth over time, expressive syntax is a vulnerable domain for children with FXS, especially for those with severe autism symptoms. Clinical implications arising from the current findings are discussed.from #Audiology via ola Kala on Inoreader http://ift.tt/2lsEXt1
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Current Methods of Evaluating Speech-Language Outcomes for Preschoolers With Communication Disorders: A Scoping Review Using the ICF-CY
Purpose
The purpose of this scoping review was to identify current measures used to evaluate speech-language outcomes for preschoolers with communication disorders within the framework of the International Classification of Functioning, Disability and Health–Children and Youth Version (ICF-CY; World Health Organization, 2007).
Method
The review involved 5 phases outlined by Arksey and O'Malley (2005) and further developed by Levac, Colquhoun, and O'Brien (2010): (a) articulating the research question; (b) identifying relevant studies; (c) selecting studies; (d) charting the data; and (e) collating, summarizing, and reporting the results. The ICF-CY was used to frame the measures included.
Results
A total of 214 relevant peer-reviewed publications were included in the review. Most publications used measures to evaluate changes in outcomes for Activities (65%), followed by measures evaluating changes in Body Functions (20%), and finally measures evaluating changes at the level of Participation (15%). There has been a slight increase in the evaluation of Participation-based outcomes in the past 4 years (2012–2015).
Conclusion
The review revealed a dearth of measures in the pediatric speech-language literature that address Participation-based outcomes. The authors strongly advocate for the use of Participation-based outcome measures to detect meaningful change in the lives of children and families.from #Audiology via xlomafota13 on Inoreader http://ift.tt/2lzIGBZ
via IFTTT
Growth of Expressive Syntax in Children With Fragile X Syndrome
Purpose
This research explored syntactic growth in children with fragile X syndrome (FXS) over a 5-year period, and variability in growth in relation to autism symptoms, nonverbal cognition, maternal responsivity, and gender.
Method
Language samples at 4 time points from 39 children with FXS, 31 boys and 8 girls, were analyzed using the Index of Productive Syntax (Scarborough, 1990) and mean length of utterance (Brown, 1973). The degree of autism symptoms was evaluated using the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1988) at the first time point. Maternal responsivity estimates were averaged across time points.
Results
Children with FXS showed significant syntactic growth over time and a significant plateau (quadratic trend) in the later observations. Children who exhibited more autism symptoms at Time 1 had significantly lower syntactic abilities over time than children who exhibited fewer autism symptoms. Nonverbal cognition significantly predicted mean length of utterance scores but not Index of Productive Syntax scores. Maternal responsivity was not a significant predictor of syntactic outcomes. Girls with FXS generally demonstrated better expressive syntax than boys with FXS with notable individual differences.
Conclusion
Despite significant growth over time, expressive syntax is a vulnerable domain for children with FXS, especially for those with severe autism symptoms. Clinical implications arising from the current findings are discussed.from #Audiology via xlomafota13 on Inoreader http://ift.tt/2lsEXt1
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Academy Research Conference 2017: Interview with Dr. Anne Marie Tharpe
Pediatrics: Advancements in Assessment and Rehabilitation
AT: Dr. Tharpe thank you for taking the time to speak with me today about the Academy Research Conference 2017, titled Pediatrics: Advancements in Assessment and Rehabilitation. You have compiled an impressive list of speakers, what went into your decision-making?
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On-Ear Verification of Open Fittings
Welcome to today's webinar entitled, On-Ear Verification of Open Fittings. Today we’ll explore how Audioscan equipment can be used to effectively verify a patient's candidacy for an open fitting, guide the subsequent on-ear verification process, and facilitate the counseling process needed to ensure maximum understanding and effective use of such treatment. Although we'll be depicting the various test procedures included in today's webinar with images created using the new Verifit 2 real ear measurement and verification system, many of these same tests can also be performed with the original Verifit system. 
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from #Audiology via ola Kala on Inoreader http://ift.tt/2kbdDzk
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On-Ear Verification of Open Fittings
Welcome to today's webinar entitled, On-Ear Verification of Open Fittings. Today we’ll explore how Audioscan equipment can be used to effectively verify a patient's candidacy for an open fitting, guide the subsequent on-ear verification process, and facilitate the counseling process needed to ensure maximum understanding and effective use of such treatment. Although we'll be depicting the various test procedures included in today's webinar with images created using the new Verifit 2 real ear measurement and verification system, many of these same tests can also be performed with the original Verifit system.
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from #Audiology via xlomafota13 on Inoreader http://ift.tt/2kbdDzk
via IFTTT
On-Ear Verification of Open Fittings
Welcome to today's webinar entitled, On-Ear Verification of Open Fittings. Today we’ll explore how Audioscan equipment can be used to effectively verify a patient's candidacy for an open fitting, guide the subsequent on-ear verification process, and facilitate the counseling process needed to ensure maximum understanding and effective use of such treatment. Although we'll be depicting the various test procedures included in today's webinar with images created using the new Verifit 2 real ear measurement and verification system, many of these same tests can also be performed with the original Verifit system.
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Compliant support surfaces affect sensory reweighting during balance control
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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What can gait tell us about dementia? Review of epidemiological and neuropsychological evidence
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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New study finds noise-related hearing loss not limited to work exposure
Unless your hearing is tested, it's really hard to know if it's damaged. That's the message of a recent Centers for Disease Control and Prevention (CDC) survey that found about one in four U.S.
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Compliant support surfaces affect sensory reweighting during balance control
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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What can gait tell us about dementia? Review of epidemiological and neuropsychological evidence
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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Compliant support surfaces affect sensory reweighting during balance control
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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Source:Gait & Posture
Author(s): I.M. Schut, D. Engelhart, J.H. Pasma, R.G.K.M. Aarts, A.C. Schouten
To maintain upright posture and prevent falling, balance control involves the complex interaction between nervous, muscular and sensory systems, such as sensory reweighting. When balance is impaired, compliant foam mats are used in training methods to improve balance control. However, the effect of the compliance of these foam mats on sensory reweighting remains unclear.In this study, eleven healthy subjects maintained standing balance with their eyes open while continuous support surface (SS) rotations disturbed the proprioception of the ankles. Multisine disturbance torques were applied in 9 trials; three levels of SS compliance, combined with three levels of desired SS rotation amplitude. Two trials were repeated with eyes closed. The corrective ankle torques, in response to the SS rotations, were assessed in frequency response functions (FRF). Lower frequency magnitudes (LFM) were calculated by averaging the FRF magnitudes in a lower frequency window, representative for sensory reweighting.Results showed that increasing the SS rotation amplitude leads to a decrease in LFM. In addition there was an interaction effect; the decrease in LFM by increasing the SS rotation amplitude was less when the SS was more compliant. Trials with eyes closed had a larger LFM compared to trials with eyes open.We can conclude that when balance control is trained using foam mats, two different effects should be kept in mind. An increase in SS compliance has a known effect causing larger SS rotations and therefore greater down weighting of proprioceptive information. However, SS compliance itself influences the sensitivity of sensory reweighting to changes in SS rotation amplitude with relatively less reweighting occurring on more compliant surfaces as SS amplitude changes.
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What can gait tell us about dementia? Review of epidemiological and neuropsychological evidence
Publication date: Available online 9 February 2017
Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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Source:Gait & Posture
Author(s): Vyara Valkanova, Klaus P Ebmeier
BackgroundCognitive impairment and gait disorders in people over the age of 65 represent major public health issues because of their high frequency, their link to poor outcomes and high costs. Research has demonstrated that these two geriatric syndromes are closely related.Methods and resultsWe aim to review the evidence supporting the relationship between gait and cognitive impairment, particularly focusing on epidemiological and neuropsychological studies in patients with Mild cognitive impairment, Alzheimer’s disease and Vascular dementia. The review demonstrates that gait and cognition are closely related, but our knowledge of their interrelationship is limited. Emerging evidence shows that gait analysis has the potential to contribute to diagnosis and prognosis of cognitive impairment.ConclusionsAn integrated approach for evaluating these major geriatric syndromes, based on their close relationship, will not only increase our understanding of cognitive-motor interactions, but most importantly may be used to aid early diagnosis, prognosis and the development of new interventions.
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New study finds noise-related hearing loss not limited to work exposure
Unless your hearing is tested, it's really hard to know if it's damaged. That's the message of a recent Centers for Disease Control and Prevention (CDC) survey that found about one in four U.S.
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via IFTTT
from #Audiology via ola Kala on Inoreader http://ift.tt/2l0eodK
via IFTTT
New study finds noise-related hearing loss not limited to work exposure
Unless your hearing is tested, it's really hard to know if it's damaged. That's the message of a recent Centers for Disease Control and Prevention (CDC) survey that found about one in four U.S.
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via IFTTT
from #Audiology via xlomafota13 on Inoreader http://ift.tt/2l0eodK
via IFTTT
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