ROLE OF MONKEY SUPERIOR COLLICULUS IN SACCADE AVERAGING

被引:72
作者
VANOPSTAL, AJ
VANGISBERGEN, JAM
机构
[1] Department of Medical Physics and Biophysics, Nijmegen, NL-6525, EZ
关键词
Averaging saccades; Monkey; Movement cells; Superior colliculus;
D O I
10.1007/BF00228883
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
We have investigated the involvement of collicular movement cells in the monkey in the execution of averaging saccades, elicited by a visual double-step stimulus. We found that, qualitatively, most (12/14) movement cells were recruited during averaging saccades in roughly the same way as for comparable visually-elicited saccades to single targets (V-saccades). However, movement-cell responses during averaging saccades in trials where the target suddenly changed direction were often less intense than for a comparable V-saccade. In these cases, the averaging responses were observed to be also slower than V-saccades of the same amplitude. Firing rate and double-step saccade dynamics were found to be significantly correlated in 9/14 cells tested. Several hypotheses for the collicular role in the generation of averaging saccades are discussed. © 1990 Springer-Verlag.
引用
收藏
页码:143 / 149
页数:7
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