Visuospatial versus visuomotor activity in the premotor and prefrontal cortex of a primate

摘要: When visuospatial stimuli instruct a limb movement, the stimulus can be said to have both sensory and sensorimotor aspects. We studied premotor prefrontal areas of rhesus monkey in order identify neuronal activity related motor (or instructional) aspects such stimuli. A chose limb-movement targets according one two rules: (1) instructed triggered movement toward their locations or (2) identical predetermined target regardless location. Gaze head fixation assured that each appeared at constant location retinocentric craniocentric coordinates, as well allocentric space. The task required spatial cued by certain had either remembered attended after presentation before movement. Thus, information presented under rule differed from other only its (instructional) significance not attentional, spatial, mnemonic, strictly could thereby test confirm hypothesis cues should commonly affect cortex, but less do so cortex.