The visual and frontal cortices.
The visual and frontal cortices.
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视觉皮质和额叶皮质。
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
M. Segraves
中科院分区：
文献类型：
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作者：
Michael E. Goldberg;M. Segraves
扫视系统使用的是一种肌肉器官和运动程序，这种肌肉器官和运动程序在灵长类动物的大脑皮层在行为产生中占据主导地位之前很久就已经进化出来了。因此，大脑皮层在眼球运动中的作用是为快速眼球运动的基本机制提供复杂的处理过程。由于灵长类动物的上级丘不能进行足够的运动处理，因此视皮层对于将视觉运动信息整合到扫视系统中是必要的。类似地，额叶皮层是执行眼跳到记住的刺激位置所必需的，而视觉驱动的眼跳可以单独由丘执行。为了产生与扫视相关的信息，皮层具有反映所有处理水平的活动，从记录刺激和选择用于扫视的刺激，到制定用于扫视的运动命令。据推测，大脑皮层也包含决策机制，灵长类动物就是通过这种机制决定对某种刺激进行扫视。这个决定是如何做出的，在哪里做出的，或者即使是在一个地方做出的，也是完全未知的。
The saccadic system uses a muscular apparatus and motor programs that evolved long before the cerebral cortex assumed the dominant role in the generation of behavior that it occupies in the primate. The cortical role in eye movements therefore is to contribute aspects of sophisticated processing to the basic apparatus for rapid eye movements. Thus visual cortex is necessary for the integration of visual motion information into the saccadic system, because the superior colliculus in the primate cannot do adequate motion processing. Similarly, frontal cortex is necessary for performing saccades to remembered stimulus positions, whereas visually driven saccades can be performed by the colliculus alone. To generate saccade-related information, the cortex has activity that reflects all levels of processing, from the registration of the stimulus and the selection of a stimulus for a saccade, to the elaboration of the motor command for the saccade. Presumably the cortex also contains the decision mechanism, whereby a primate decides to make a saccade to a certain stimulus. How, and where that decision is made, or even if the decision occurs at a single place, is totally unknown.