Gaze shift during optokinetic stimulation in head free cats
Gaze shift during optokinetic stimulation in head free cats
复制标题
无头猫视动刺激期间的注视转移
DOI：
10.1016/0304-3940(94)11130-b
复制
发表时间：
1995
影响因子：
2.5
通讯作者：
G. Schweigart
中科院分区：
文献类型：
--
作者：
G. Schweigart
在对自由站立的猫进行水平视动刺激（移动随机点图案）期间，使用搜索线圈技术测量凝视、头部和眼睛运动。评估位置值（“跳动场”）。注视位置取决于刺激方向和刺激速度；刺激速度越快（在高速时平均值达到 15°），它就会向刺激来源的位置移动得越多。头部贡献了约三分之二的注视转移，而眼睛对着头部贡献了约三分之一，因此保持在眼眶中心附近。在单眼视动刺激过程中，猫表现出方向不对称：在颞到鼻刺激期间凝视和头部的位置发生显着变化，而在鼻到颞刺激期间几乎没有变化。据讨论，注视位置的转移代表了朝向“兴趣中心”的定向运动。
During horizontal optokinetic stimulation (moving random dot pattern) in freely standing cats, gaze, head, and eye movements were measured with the search coil technique. The position values (‘beating field’) were evaluated. Gaze position depended on stimulus direction and stimulus velocity; it shifted to where the stimulus came from, the more the faster the stimulus velocity (mean values reached 15° during high velocities). The head contributed about two-thirds of the gaze shift and eye-in-head about one-third, thus remaining near to the center of the orbit. During monocular optokinetic stimulation, the cats showed a directional asymmetry: a prominent position shift of gaze and head during temporal-to-nasal stimulation and almost no shift during nasal-to-temporal stimulation. It is discussed that the shift of gaze position represents an orienting movement towards a ‘center of interest’.