OCULAR PROPRIOCEPTION AND EFFERENCE COPY IN REGISTERING VISUAL DIRECTION
OCULAR PROPRIOCEPTION AND EFFERENCE COPY IN REGISTERING VISUAL DIRECTION
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DOI：
10.1016/0042-6989(91)90185-8
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发表时间：
1991-01-01
期刊：
影响因子：
1.8
通讯作者：
STARK, L
中科院分区：
文献类型：
--
作者：
BRIDGEMAN, B;STARK, L
我们测量了眼肌本体感觉(“流入”)和传出复制(“流出”)在记录眼睛位置中的作用。在单眼注视期间，按压被遮挡的眼睛的一侧会导致被动旋转，改变本体感觉，而不影响动眼神经传出。如前所述，持续按压观察眼一侧会引起主动的旋转阻力，改变传出能力，因为动眼神经会补偿眼压；观察眼的注视保持不变。使用这两种类型的眼压，在传出复制、本体感觉和对照(没有眼压)条件下，测量了8名受试者在非结构化视野中的知觉目标偏差和指向偏差。用光电方法测量眼球偏斜度。传出复制和本体感觉的生理增益分别约为5/8和1/4。知觉判断与开环指点差异无统计学意义。传出复制和本体感觉的增益之和，约为7/8，表明非结构化视野中眼睛偏心的不完全配准，并定量地解释了文献中以前未解释的几个结果。
We measured the roles of eye muscle proprioception ("inflow") and efference copy ("outflow") in registering eye position. During monocular fixation, pressing on the side of an occluded eye results in a passive rotation, changing the proprioception without affecting oculomotor efference. As we have shown previously, a constant press on the side of the viewing eye induces active resistance to rotation, changing efference because oculomotor innervation compensates for the eyepress; the viewing eye's fixation remains constant. Using these two types of eyepress, both perceived target deviations and pointing biases in an unstructured visual field were measured in 8 subjects under efference copy, proprioception and control (no eyepress) conditions. Eye deviation was measured photoelectrically. Physiological gains of efference copy and proprioception were about 5/8 and 1/4 respectively. There was no statistically significant difference between perceptual judgement and open-loop pointing. The sum of gains of efference copy and proprioception, about 7/8, indicates incomplete registration of eye eccentricity in an unstructured field, and quantitatively accounts for several previously unexplained results in the literature.