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Topographic organization in the brain: searching for general principles
Gaurav H Patel1, David M Kaplan2, Lawrence H Snyder3
1Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA; New York State Psychiatric Institute, New York, NY 10032, USA.
Trends in Cognitive Sciences
|May 28, 2014
Summary
Cortical areas may not represent the world continuously. This review explores novel topographic organization principles in the macaque lateral intraparietal area (LIP) and their implications for brain function.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
Background:
- Neurons in many cortical areas exhibit topographic organization, mapping nearby neurons to nearby world locations.
- This organization is common in primary sensory and motor cortices.
Purpose of the Study:
- To review evidence for novel principles of topographic organization in associative cortical areas.
- To explore the implications of these principles for brain function, specifically in the macaque lateral intraparietal area (LIP).
Main Methods:
- Review of existing scientific literature and evidence.
- Analysis of topographic organization principles in the macaque lateral intraparietal area (LIP).
Main Results:
- Associative cortical areas may not represent the external world in a complete and continuous manner.
- Novel principles of topographic organization exist in the macaque lateral intraparietal area (LIP).
Conclusions:
- The representation of the external world in associative areas differs from primary sensory/motor cortices.
- Understanding these novel topographic principles is crucial for comprehending parietal cortex function.
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