Dr. Gus Mueller: Our presenter today for our Vanderbilt Journal Club is Dr. Erin Picou. We are fortunate to have someone talking about current hearing aid research who also is conducting and publishing her own research in this area.
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Κυριακή 24 Ιανουαρίου 2016
Everybody on your Feet! Introducing Cheer!
This course is an introduction to the Cheer family of products. Cheer is a well-balanced line-up of Sonic products featuring impressive sound quality statistics. Anyone who has ever fit a Sonic product knows the natural component of sound is something that we hold near and dear to our hearts. Today, we are going to talk about all of the things that are important to Cheer. First and foremost is the sound. Natural sound begins with a sound processor that is engineered for premium quality. We have an industry-acclaimed system. 
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Phonak CROS II
Editor’s Note: This text course is an edited transcript of a live webinar. Download supplemental course materials.Learning ObjectivesAt the conclusion of this course, you will be able to describe the different wireless CROS and Bi-CROS solution 
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The effect of weight-bearing asymmetry on dynamic postural stability in healthy young individuals
Publication date: March 2016
Source:Gait & Posture, Volume 45
Author(s): Digna de Kam, Jip. F. Kamphuis, Vivian Weerdesteyn, Alexander C.H. Geurts
BackgroundIn people with lateralized disorders, such as stroke, Weight-Bearing Asymmetry (WBA) is common. It is associated with postural instability, however, WBA is one of several abnormalities that may affect postural stability in these disorders. Therefore, we investigated the isolated effects of WBA on dynamic postural stability in healthy individuals.MethodsTen young participants were subjected to multidirectional stance perturbations by support surface translations at three levels of WBA (0, 10 and 20% of body weight unloading of one leg). The stepping threshold was determined iteratively for each condition and in four perturbation directions (forward, backward, leftward and rightward). The stepping threshold was defined as the highest perturbation intensity recovered from with a feet-in-place response. The Margin of Stability (MOS) at the stepping threshold was defined as the smallest distance between the vertical projection of the Extrapolated Center of Mass (XCOM) and the edge of the base of support.ResultsWBA decreased the stepping threshold (stability decreased) for perturbations towards the loaded side (translations towards the unloaded side), whereas it increased stepping thresholds for perturbations towards the unloaded side. No significant effects of WBA were found on the MOS. WBA increased the frequency of stepping with the unloaded leg upon forward and backward perturbations.ConclusionWBA increased dynamic stability towards the unloaded leg following external balance perturbations and resulted in a greater probability of stepping with this leg. Future studies are needed to evaluate the functional significance of these WBA-related effects on postural stability in people with lateralized disorders.
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Source:Gait & Posture, Volume 45
Author(s): Digna de Kam, Jip. F. Kamphuis, Vivian Weerdesteyn, Alexander C.H. Geurts
BackgroundIn people with lateralized disorders, such as stroke, Weight-Bearing Asymmetry (WBA) is common. It is associated with postural instability, however, WBA is one of several abnormalities that may affect postural stability in these disorders. Therefore, we investigated the isolated effects of WBA on dynamic postural stability in healthy individuals.MethodsTen young participants were subjected to multidirectional stance perturbations by support surface translations at three levels of WBA (0, 10 and 20% of body weight unloading of one leg). The stepping threshold was determined iteratively for each condition and in four perturbation directions (forward, backward, leftward and rightward). The stepping threshold was defined as the highest perturbation intensity recovered from with a feet-in-place response. The Margin of Stability (MOS) at the stepping threshold was defined as the smallest distance between the vertical projection of the Extrapolated Center of Mass (XCOM) and the edge of the base of support.ResultsWBA decreased the stepping threshold (stability decreased) for perturbations towards the loaded side (translations towards the unloaded side), whereas it increased stepping thresholds for perturbations towards the unloaded side. No significant effects of WBA were found on the MOS. WBA increased the frequency of stepping with the unloaded leg upon forward and backward perturbations.ConclusionWBA increased dynamic stability towards the unloaded leg following external balance perturbations and resulted in a greater probability of stepping with this leg. Future studies are needed to evaluate the functional significance of these WBA-related effects on postural stability in people with lateralized disorders.
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