Advisor Information
Mukul Mukherjee
Location
Dr. C.C. and Mabel L. Criss Library
Presentation Type
Poster
Start Date
3-3-2017 2:15 PM
End Date
3-3-2017 3:30 PM
Abstract
Locomotor adaptation requires input from vision, somatosensory and vestibular systems. The contribution of the vestibular system is important for maintaining postural control during gait specifically orientation of the head on the trunk and acceleration (linear and angular) feedback. Disrupting this system causes instabilities during locomotion. However, it is not clear, how much the vestibular system contributes to gait adaptation. Eighteen healthy adults adapted to a split-belt treadmill task with or without additional vestibular perturbation using bilateral mastoid vibration. The symmetry index for step length and step time, as well as the change in standard deviation in stride time for both right and left legs, were then analyzed. While bilateral mastoid vibration did not disrupt the learning of the split belt task, those who had received vestibular perturbations had lower variability earlier in the trial when compared to later trials. this indicated that vestibular feedback is important for the early phase of learning and its absence may restrict explorative ability. In addition, sensory perturbation is known to enhance adaptive transfer effects through multisensory recalibration. such enhanced effects can potentially accelerate rehabilitation in patient populations.
The Effect of Bilateral Vestibular Stimulation on Locomotor Adaptation
Dr. C.C. and Mabel L. Criss Library
Locomotor adaptation requires input from vision, somatosensory and vestibular systems. The contribution of the vestibular system is important for maintaining postural control during gait specifically orientation of the head on the trunk and acceleration (linear and angular) feedback. Disrupting this system causes instabilities during locomotion. However, it is not clear, how much the vestibular system contributes to gait adaptation. Eighteen healthy adults adapted to a split-belt treadmill task with or without additional vestibular perturbation using bilateral mastoid vibration. The symmetry index for step length and step time, as well as the change in standard deviation in stride time for both right and left legs, were then analyzed. While bilateral mastoid vibration did not disrupt the learning of the split belt task, those who had received vestibular perturbations had lower variability earlier in the trial when compared to later trials. this indicated that vestibular feedback is important for the early phase of learning and its absence may restrict explorative ability. In addition, sensory perturbation is known to enhance adaptive transfer effects through multisensory recalibration. such enhanced effects can potentially accelerate rehabilitation in patient populations.