MOVEMENT OF NEURAL ACTIVITY ON THE SUPERIOR COLLICULUS MOTOR MAP DURING GAZE SHIFTS

被引：127

作者：

MUNOZ, DP ^{[1
]}

PELISSON, D ^{[1
]}

GUITTON, D ^{[1
]}

机构：

[1] MCGILL UNIV,MONTREAL NEUROL INST,DEPT NEUROL & NEUROSURG,3801 UNIV,MONTREAL H3A 2B4,QUEBEC,CANADA

来源：

SCIENCE | 1991年 / 251卷 / 4999期

关键词：

D O I：

10.1126/science.2003221

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The superior colliculus contains neurons that cause displacements of the visual axis (gaze shifts). These cells are arranged topographically in a motor map on which the vector (amplitude and direction) of the coded movement varies continuously with location. How this spatial representation becomes a temporal code (frequency and duration) in the motoneurons is unknown. During a gaze shift, a zone of neural activity moved continuously on the map from an initial location, defining the vector of the desired gaze shift, to a final "zero" position containing neurons that were active during fixation. Thus, the spatial-temporal transformation may be accomplished by control of gaze throughout the spatial trajectory of activity on the motor map.

引用

页码：1358 / 1360

页数：3

共 31 条

[1] SOME COLLICULAR EFFERENT NEURONS CODE SACCADIC EYE VELOCITY [J].