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date: 29 September 2020

Abstract and Keywords

The posterior parietal cortex (PPC) is a node within the cerebral ‘higher-order’ network that has no clear homologue in non-primate mammals and is fully defined only in catarrhine primates, which include old world monkeys and hominoids. The late coming of the PPC in the eye movement circuit and the absence of an unequivocal role in saccade preparation and production suggests that the PPC should only be viewed as an innovation to enhance the sensory guidance and flexible control of visual behaviour. In line with this idea is the evidence that the lateral intraparietal area integrates sensory and goal-directed information into a map wherein representations of spatial locations can be maintained and selected as saccade targets through decision processes.

Keywords: posterior parietal cortex, saccadic eye movement, macaque monkey, neuronal activity, evolutionary

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