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Annu. Rev. Neurosci. 2002. 25:189220 doi: 10.1146/annurev.neuro.25.112701.142922
 

Summary: Annu. Rev. Neurosci. 2002. 25:189220
doi: 10.1146/annurev.neuro.25.112701.142922
Copyright c 2002 by Annual Reviews. All rights reserved
INTENTIONAL MAPS IN POSTERIOR
PARIETAL CORTEX
Richard A. Andersen and Christopher A. Buneo
Division of Biology, California Institute of Technology, Mail Code 216-76, Pasadena,
California 91125; email: andersen@vis.caltech.edu; chris@vis.caltech.edu
Key Words eye movements, arm movements, optic flow, spatial representations,
neural prosthetics
s Abstract The posterior parietal cortex (PPC), historically believed to be a sensory
structure, is now viewed as an area important for sensory-motor integration. Among its
functions is the forming of intentions, that is, high-level cognitive plans for movement.
There is a map of intentions within the PPC, with different subregions dedicated to
the planning of eye movements, reaching movements, and grasping movements. These
areas appear to be specialized for the multisensory integration and coordinate trans-
formations required to convert sensory input to motor output. In several subregions
of the PPC, these operations are facilitated by the use of a common distributed space
representation that is independent of both sensory input and motor output. Attention
and learning effects are also evident in the PPC. However, these effects may be general

  

Source: Andersen, Richard - Division of Biology, California Institute of Technology

 

Collections: Biology and Medicine