CONTRIBUTION OF IRREGULAR SEMICIRCULAR CANAL AFFERENTS TO THE HORIZONTAL VESTIBULOOCULAR RESPONSE DURING CONSTANT VELOCITY ROTATION

被引:44
作者
ANGELAKI, DE
PERACHIO, AA
机构
[1] UNIV TEXAS,MED BRANCH,DEPT PHYSIOL & BIOPHYS,GALVESTON,TX 77550
[2] UNIV TEXAS,MED BRANCH,DEPT ANAT & NEUROSCI,GALVESTON,TX 77550
关键词
D O I
10.1152/jn.1993.69.3.996
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
1. The effects of constant anodal currents (100 muA) delivered bilaterally to both labyrinths on the horizontal vestibuloocular response (VOR) were studied in squirrel monkeys during steps of angular velocity in the dark. We report that bilateral anodal currents decreased eye velocity approximately 30-50% during the period of galvanic stimulation without a change in the time constant of VOR. The decrease in eye velocity, present during steps of angular velocity, was not observed during sinusoidal head rotation at 0.2, 0.5, and 1 Hz. The results suggest that responses from irregular vestibular afferents influence VOR amplitude during constant velocity rotation.
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页码:996 / 999
页数:4
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