Early coding of visuomanual coordination during reaching in parietal area PEc

摘要: The parietal mechanisms of eye-hand coordination during reaching were studied by recording neural activity in area PEc while monkeys performed different tasks, aimed at assessing the influence retinal, hand-, and eye-related signals on activity. tasks used consisted 1) to foveated 2) extra-foveal targets, with constant eye position; 3) saccadic movement toward, holding position peripheral same as those tasks. In all hand and/or movements made from a central eight targets. A conventional visual fixation paradigm was control task, assess location extent receptive field neurons. large proportion cells displayed significant relationships direction position. Many them also related eye's Relationships found for smaller cells. Most neurons tuned combination hand- signals; some influenced information. This can be an expression early stages composition motor commands forms visuomotor that depend integration These results assign PEc, classically considered somatosensory association cortex, new role.