VOR gain and body sway before and after VOR gain adaptation

Eighteen healthy adults stood wearing an inertial measurement device with their eyes closed on foam before and after incremental VOR gain down adaptation. Active head impulse VOR gain was measured before and after the adaptation to ensure VOR gain adaptation. Percentage change for VOR gain was determined. Sway area was compared before and after VOR adaptation. VOR gain decreased unilaterally exceeding meaningful change values. Sway area was significantly greater immediately after VOR gain down adaptation, but quickly returned to baseline.

18名健康成人在渐进式前庭眼反射（Vestibulo-Ocular Reflex, VOR）增益下调适应前后，闭眼站于泡沫垫上并佩戴惯性测量装置。于适应前后测量主动头脉冲状态下的VOR增益，以确认VOR增益已发生适应。计算VOR增益的变化百分比，并比较VOR适应前后的身体晃动面积。单侧VOR增益出现下降，且下降幅度超过具有统计学意义的临界值。VOR增益下调适应后即刻，身体晃动面积显著增大，但随后迅速恢复至基线水平。