Prevalence and risk factors for reduced sound tolerance (hyperacusis) in children

10.3109/14992027.2015.1092055<br/>Amanda J. Hall

from #Audiology via ola Kala on Inoreader http://ift.tt/1jL4fgn
via IFTTT

Age and gender differences in children and adolescents’ attitudes toward noise

10.3109/14992027.2015.1098784<br/>Andrea D. Warner-Czyz

from #Audiology via ola Kala on Inoreader http://ift.tt/1jL4eZZ
via IFTTT

Prevalence and risk factors for reduced sound tolerance (hyperacusis) in children

10.3109/14992027.2015.1092055<br/>Amanda J. Hall

from #Audiology via ola Kala on Inoreader http://ift.tt/1jL4fgn
via IFTTT

Age and gender differences in children and adolescents’ attitudes toward noise

10.3109/14992027.2015.1098784<br/>Andrea D. Warner-Czyz

from #Audiology via ola Kala on Inoreader http://ift.tt/1jL4eZZ
via IFTTT

Prevalence and risk factors for reduced sound tolerance (hyperacusis) in children

10.3109/14992027.2015.1092055<br/>Amanda J. Hall

from #Audiology via ola Kala on Inoreader http://ift.tt/1QbFHLP
via IFTTT

Age and gender differences in children and adolescents’ attitudes toward noise

10.3109/14992027.2015.1098784<br/>Andrea D. Warner-Czyz

from #Audiology via ola Kala on Inoreader http://ift.tt/1Txk9au
via IFTTT

Prevalence and risk factors for reduced sound tolerance (hyperacusis) in children

10.3109/14992027.2015.1092055<br/>Amanda J. Hall

from #Audiology via ola Kala on Inoreader http://ift.tt/1QbFHLP
via IFTTT

Age and gender differences in children and adolescents’ attitudes toward noise

10.3109/14992027.2015.1098784<br/>Andrea D. Warner-Czyz

from #Audiology via ola Kala on Inoreader http://ift.tt/1Txk9au
via IFTTT

Prevalence and risk factors for reduced sound tolerance (hyperacusis) in children

10.3109/14992027.2015.1092055<br/>Amanda J. Hall

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1QbFHLP
via IFTTT

Age and gender differences in children and adolescents’ attitudes toward noise

10.3109/14992027.2015.1098784<br/>Andrea D. Warner-Czyz

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1Txk9au
via IFTTT

Audible 2 Tinnitus Review

Tinnitus, also known as ringing of the ears, can be one of the most frustrating physical problems a person can deal with in their lives. With doctors having few answers as to what causes it and why it seems to come and go at times, patients with this condition can get frustrated to say the least. As with most other physical problems people face, there are those who claim to offer solutions to their problems, and tinnitus is no exception. One of the latest products to come along claiming to have the answers to combat tinnitus is the Audible 2, a type of hearing aid that is supposedly geared toward eliminating many of the problems associated with tinnitus.

Customizable Relief
When doing an Audible 2 tinnitus review, one of the first areas to look at closely involves the claims of customizable relief. The Audible 2 hearing aid supposedly possesses multiflex tinnitus technology, which the company says can provide tremendous versatility in relieving sound stimulus that can trigger or aggravate tinnitus symptoms.

Compatibility with Tinnitus Therapies
Many products say they are completely compatible with today’s leading tinnitus therapies, and the Audible 2 is no exception. Supposedly able to work very well with such therapies as retraining or masking, many experts who have conducted their own Audible 2 tinnitus review have found little difference in symptoms no matter what type of hearing aid is used.

Self Learning
The Audible 2 is also said to be able to automatically learn a person’s hearing preferences and over time adjust the hearing aid accordingly to maximize its benefits. According to the company, the longer the hearing aid is worn, the more adjustments it makes, leading to the person having to make few if any manual adjustments. However, as with any hearing aid, it is almost inevitable that from time to time the user will have to adjust volume or other controls manually in order to achieve the best performance from the hearing aid.

Reduced Mental Fatigue
Here again, the makers of the Audible 2 claim a person will suffer less mental fatigue as a result of wearing their hearing aid. According to the company, the hearing aid will reduce background noise so much that the user can spend extended periods of time in noisy environments without suffering from tinnitus symptoms.

After reading the Audible 2 tinnitus review, those who suffer from the condition will have to decide if the claims made for the hearing aid are viable and worth pursuing. While tinnitus is a frustrating physical condition, being disappointed by a product that cannot live up to its claims can be just as frustrating if not more so.

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1OeSGX9
via IFTTT

Mastoid Dimensions in Children and Young Adults: Consequences for the Geometry of Transcutaneous Bone-Conduction Implants.

Objectives: Bone-conduction implants (BCI) are available for adults and children who are aged 5 years or more. Because a transcutaneous bone-conduction implant introduced in 2013 does not completely fit into all adult mastoids, we investigated mastoid dimensions and the possibility of fitting the implant in children. Design: Computed tomography scans of 151 mastoids from 80 children and young adolescents from the age of 5 months to 20 years and 52 control mastoids from 33 adults were retrospectively analyzed. After three-dimensional reconstruction, mastoid volume was measured. The chances of fitting the Bonebridge or a novel BCI were determined as a function of age. Implant diameter and implantation depths were virtually varied to identify the most advantageous dimensions for reducing the minimum age for implantation. Results: Mastoid volume increased to 13.8 ml in female and 16.4 ml in male adult mastoids at ages 18.9 years (male) and 19.0 years (female). Without compromising the middle fossa dura or the sinus and without lifts, the Bonebridge implant fit in 81% of male adult mastoids and 77% of the female adult mastoids. For children, the 50% chance of fitting a Bonebridge in the mastoids was reached at age 12 years; with a protrusion of 4 mm (4-mm lifts), this age was reduced to >6 years. The novel BCI fit in 100% of male and 94% of female adult mastoids. Conclusions: Casing diameter is the most limiting factor for Bonebridge implantation in children. A modified implant casing with a truncated cone and reduced diameter and volume would increase the number of hearing impaired children who can be rehabilitated with a Bonebridge implant. Radiological planning for Bonebridge implantation is necessary in all children. Copyright (C) 2015 by Otology & Neurotology, Inc. Image copyright (C) 2010 Wolters Kluwer Health/Anatomical Chart Company

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1TUsqpH
via IFTTT

Airgun inter-pulse noise field during a seismic survey in an Arctic ultra shallow marine environment

Offshore oil and gas exploration using seismic airguns generates intense underwater pulses that could cause marine mammal hearing impairment and/or behavioral disturbances. However, few studies have investigated the resulting multipath propagation and reverberation from airgun pulses. This research uses continuous acoustic recordings collected in the Arctic during a low-level open-water shallow marine seismic survey, to measure noise levels between airgun pulses. Two methods were used to quantify noise levels during these inter-pulse intervals. The first, based on calculating the root-mean-square sound pressure level in various sub-intervals, is referred to as the increment computation method, and the second, which employs the Hilbert transform to calculate instantaneous acoustic amplitudes, is referred to as the Hilbert transform method. Analyses using both methods yield similar results, showing that the inter-pulse sound field exceeds ambient noise levels by as much as 9 dB during relatively quiet conditions. Inter-pulse noise levels are also related to the source distance, probably due to the higher reverberant conditions of the very shallow water environment. These methods can be used to quantify acoustic environment impacts from anthropogenic transient noises (e.g., seismic pulses, impact pile driving, and sonar pings) and to address potential acoustic masking affecting marine mammals.

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1LYUpOG
via IFTTT

Low-frequency sound level in the Southern Indian Ocean

This study presents long-term statistics on the ambient sound in the Southern Indian Ocean basin based on 2 years of data collected on six widely distributed autonomous hydrophones from 47°S to 4°S and 53°E to 83°E. Daily mean power spectra (10–100 Hz) were analyzed in order to identify the main sound sources and their space and time variability. Periodic signals are principally associated with the seasonal presence of three types of blue whales and fin whales whose signatures are easily identified at specific frequencies. In the low frequencies, occurrence of winter lows and summer highs in the ambient noise levels are well correlated with iceberg volume variations at the southern latitudes, suggesting that icebergs are a major sound source, seasonally contributing to the ambient noise, even at tropical latitudes (26°S). The anthropogenic contribution to the noise spectrum is limited. Shipping sounds are only present north and west of the study area in the vicinity of major traffic lanes. Acoustic recordings from the southern sites may thus be representative of the pristine ambient noise in the Indian Ocean.

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1OKYnRl
via IFTTT

Between-day reliability of triceps surae responses to standing perturbations in people post-stroke and healthy controls: a high-density surface EMG investigation

Publication date: Available online 7 December 2015
Source:Gait & Posture
Author(s): A. Gallina, C.L. Pollock, T.M. Vieira, T.D. Ivanova, S.J. Garland
The reliability of triceps surae electromyographic responses to standing perturbations in people after stroke and healthy controls is unknown. High-Density surface Electromyography (HDsEMG) is a technique that records electromyographic signals from different locations over a muscle, overcoming limitations of traditional surface EMG such as between-day differences in electrode placement. In this study, HDsEMG was used to measure responses from soleus (SOL, 18 channels) and medial and lateral gastrocnemius (MG and LG, 16 channels each) in ten people after stroke and ten controls. Timing and amplitude of the response were estimated for each channel of the grids. Intraclass Correlation Coefficient (ICC) and normalized Standard Error of Measurement (SEM%) were calculated for each channel individually (single-channel configuration) and on the median of each grid (all-channels configuration). Both timing (single-channel: ICC=0.75-0.96, SEM%=5.0-9.1; all-channels: ICC=0.85-0.97; SEM%=3.5-6.2%) and amplitude (single-channel: ICC=0.60-0.91, SEM%=25.1-46.6; ICC=0.73-0.95, SEM%=19.3-42.1) showed good-to-excellent reliability. HDsEMG provides reliable estimates of EMG responses to perturbations both in individuals after stroke and in healthy controls; reliability was marginally better for the all-channels compared to the single-channel configuration.



from #Audiology via ola Kala on Inoreader http://ift.tt/1QaIkO6
via IFTTT

Airgun inter-pulse noise field during a seismic survey in an Arctic ultra shallow marine environment

Offshore oil and gas exploration using seismic airguns generates intense underwater pulses that could cause marine mammal hearing impairment and/or behavioral disturbances. However, few studies have investigated the resulting multipath propagation and reverberation from airgun pulses. This research uses continuous acoustic recordings collected in the Arctic during a low-level open-water shallow marine seismic survey, to measure noise levels between airgun pulses. Two methods were used to quantify noise levels during these inter-pulse intervals. The first, based on calculating the root-mean-square sound pressure level in various sub-intervals, is referred to as the increment computation method, and the second, which employs the Hilbert transform to calculate instantaneous acoustic amplitudes, is referred to as the Hilbert transform method. Analyses using both methods yield similar results, showing that the inter-pulse sound field exceeds ambient noise levels by as much as 9 dB during relatively quiet conditions. Inter-pulse noise levels are also related to the source distance, probably due to the higher reverberant conditions of the very shallow water environment. These methods can be used to quantify acoustic environment impacts from anthropogenic transient noises (e.g., seismic pulses, impact pile driving, and sonar pings) and to address potential acoustic masking affecting marine mammals.

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1LYUpOG
via IFTTT

Low-frequency sound level in the Southern Indian Ocean

This study presents long-term statistics on the ambient sound in the Southern Indian Ocean basin based on 2 years of data collected on six widely distributed autonomous hydrophones from 47°S to 4°S and 53°E to 83°E. Daily mean power spectra (10–100 Hz) were analyzed in order to identify the main sound sources and their space and time variability. Periodic signals are principally associated with the seasonal presence of three types of blue whales and fin whales whose signatures are easily identified at specific frequencies. In the low frequencies, occurrence of winter lows and summer highs in the ambient noise levels are well correlated with iceberg volume variations at the southern latitudes, suggesting that icebergs are a major sound source, seasonally contributing to the ambient noise, even at tropical latitudes (26°S). The anthropogenic contribution to the noise spectrum is limited. Shipping sounds are only present north and west of the study area in the vicinity of major traffic lanes. Acoustic recordings from the southern sites may thus be representative of the pristine ambient noise in the Indian Ocean.

from #Audiology via xlomafota13 on Inoreader http://ift.tt/1OKYnRl
via IFTTT

Between-day reliability of triceps surae responses to standing perturbations in people post-stroke and healthy controls: a high-density surface EMG investigation

Publication date: Available online 7 December 2015
Source:Gait & Posture
Author(s): A. Gallina, C.L. Pollock, T.M. Vieira, T.D. Ivanova, S.J. Garland
The reliability of triceps surae electromyographic responses to standing perturbations in people after stroke and healthy controls is unknown. High-Density surface Electromyography (HDsEMG) is a technique that records electromyographic signals from different locations over a muscle, overcoming limitations of traditional surface EMG such as between-day differences in electrode placement. In this study, HDsEMG was used to measure responses from soleus (SOL, 18 channels) and medial and lateral gastrocnemius (MG and LG, 16 channels each) in ten people after stroke and ten controls. Timing and amplitude of the response were estimated for each channel of the grids. Intraclass Correlation Coefficient (ICC) and normalized Standard Error of Measurement (SEM%) were calculated for each channel individually (single-channel configuration) and on the median of each grid (all-channels configuration). Both timing (single-channel: ICC=0.75-0.96, SEM%=5.0-9.1; all-channels: ICC=0.85-0.97; SEM%=3.5-6.2%) and amplitude (single-channel: ICC=0.60-0.91, SEM%=25.1-46.6; ICC=0.73-0.95, SEM%=19.3-42.1) showed good-to-excellent reliability. HDsEMG provides reliable estimates of EMG responses to perturbations both in individuals after stroke and in healthy controls; reliability was marginally better for the all-channels compared to the single-channel configuration.



from #Audiology via xlomafota13 on Inoreader http://ift.tt/1QaIkO6
via IFTTT

Between-day reliability of triceps surae responses to standing perturbations in people post-stroke and healthy controls: a high-density surface EMG investigation

Publication date: Available online 7 December 2015
Source:Gait & Posture
Author(s): A. Gallina, C.L. Pollock, T.M. Vieira, T.D. Ivanova, S.J. Garland
The reliability of triceps surae electromyographic responses to standing perturbations in people after stroke and healthy controls is unknown. High-Density surface Electromyography (HDsEMG) is a technique that records electromyographic signals from different locations over a muscle, overcoming limitations of traditional surface EMG such as between-day differences in electrode placement. In this study, HDsEMG was used to measure responses from soleus (SOL, 18 channels) and medial and lateral gastrocnemius (MG and LG, 16 channels each) in ten people after stroke and ten controls. Timing and amplitude of the response were estimated for each channel of the grids. Intraclass Correlation Coefficient (ICC) and normalized Standard Error of Measurement (SEM%) were calculated for each channel individually (single-channel configuration) and on the median of each grid (all-channels configuration). Both timing (single-channel: ICC=0.75-0.96, SEM%=5.0-9.1; all-channels: ICC=0.85-0.97; SEM%=3.5-6.2%) and amplitude (single-channel: ICC=0.60-0.91, SEM%=25.1-46.6; ICC=0.73-0.95, SEM%=19.3-42.1) showed good-to-excellent reliability. HDsEMG provides reliable estimates of EMG responses to perturbations both in individuals after stroke and in healthy controls; reliability was marginally better for the all-channels compared to the single-channel configuration.



from #Audiology via ola Kala on Inoreader http://ift.tt/1QaIkO6
via IFTTT

Between-day reliability of triceps surae responses to standing perturbations in people post-stroke and healthy controls: a high-density surface EMG investigation

Publication date: Available online 7 December 2015
Source:Gait & Posture
Author(s): A. Gallina, C.L. Pollock, T.M. Vieira, T.D. Ivanova, S.J. Garland
The reliability of triceps surae electromyographic responses to standing perturbations in people after stroke and healthy controls is unknown. High-Density surface Electromyography (HDsEMG) is a technique that records electromyographic signals from different locations over a muscle, overcoming limitations of traditional surface EMG such as between-day differences in electrode placement. In this study, HDsEMG was used to measure responses from soleus (SOL, 18 channels) and medial and lateral gastrocnemius (MG and LG, 16 channels each) in ten people after stroke and ten controls. Timing and amplitude of the response were estimated for each channel of the grids. Intraclass Correlation Coefficient (ICC) and normalized Standard Error of Measurement (SEM%) were calculated for each channel individually (single-channel configuration) and on the median of each grid (all-channels configuration). Both timing (single-channel: ICC=0.75-0.96, SEM%=5.0-9.1; all-channels: ICC=0.85-0.97; SEM%=3.5-6.2%) and amplitude (single-channel: ICC=0.60-0.91, SEM%=25.1-46.6; ICC=0.73-0.95, SEM%=19.3-42.1) showed good-to-excellent reliability. HDsEMG provides reliable estimates of EMG responses to perturbations both in individuals after stroke and in healthy controls; reliability was marginally better for the all-channels compared to the single-channel configuration.



from #Audiology via ola Kala on Inoreader http://ift.tt/1QaIkO6
via IFTTT