FREQUENCY-DEPENDENCE OF CAT VESTIBULOOCULAR REFLEX DIRECTION ADAPTATION - SINGLE FREQUENCY AND MULTIFREQUENCY ROTATIONS

被引:19
|
作者
POWELL, KD [1 ]
QUINN, KJ [1 ]
RUDE, SA [1 ]
PETERSON, BW [1 ]
BAKER, JF [1 ]
机构
[1] NORTHWESTERN UNIV, INST NEUROSCI, CHICAGO, IL 60611 USA
关键词
VESTIBULOOCULAR REFLEX; VESTIBULOOCULAR REFLEX DIRECTION ADAPTATION; VESTIBULOOCULAR REFLEX PLASTICITY; FREQUENCY DEPENDENCE;
D O I
10.1016/0006-8993(91)90417-T
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Vertical and horizontal vestibulo-ocular reflex (VOR) eye movements were recorded in alert cats during horizontal rotation in total darkness before and after a 2 h vestibulo-ocular reflex direction adaptation procedure. Adaptation stimuli were whole body horizontal vestibular rotation coupled to synchronous vertical optokinetic motion. The waveform of the adaptation stimuli was either a sinusoid at 0.05, 0.1, 0.25, 0.5, or 1 Hz, or a sum of sinusoids containing 0.2, 0.3, 0.5, 0.7, 1.1, and 1.7 Hz. Exposure to single frequency stimuli produced adaptive vertical VOR with a gain that was greatest near the training frequency; adaptive VOR phases were advanced below, accurate at, and lagged above the training frequency. Exposure to the multifrequency waveform produced a uniform modest increase in gain across frequencies, with accurate adaptive VOR phase.
引用
收藏
页码:137 / 141
页数:5
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