Parietofrontal circuits for action and space perception in the macaque monkey.

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Motor Control

Background:

• The posterior parietal cortex's (PPC) classical functional role is undergoing revision.
• The PPC comprises multiple distinct areas with selective reciprocal connections to the agranular frontal cortex (motor cortex).

Purpose of the Study:

• To re-evaluate the functional role of the posterior parietal cortex.
• To understand the sensorimotor transformations mediated by parietofrontal circuits.
• To explore the neural basis of spatial coding and perception.

Main Methods:

• Review of recent research on posterior parietal cortex function.
• Analysis of parietofrontal circuit connectivity and function.
• Neurophysiological and computational modeling approaches (implied).

Main Results:

• Parietofrontal circuits mediate parallel sensorimotor transformations for specific actions.
• Space coding arises from multiple action-specific spatial representations.
• The notion of a single parietal center for space perception is outdated.

Conclusions:

• The functional organization of the posterior parietal cortex is complex and action-specific.
• Spatial perception is a distributed process involving multiple representations.
• Future research should focus on these distributed, action-specific circuits.