Barrel Cortex

Karel Svoboda, Bryan M. Hooks and Gordon M. G. Shepherd

in Handbook of Brain Microcircuits

Published on behalf of Oxford University Press

Published in print August 2010 | ISBN: 9780195389883
Published online September 2012 | e-ISBN: 9780199965137 | DOI:
Barrel Cortex

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Rodents actively move their whiskers to gather tactile information about their environment. The array of whiskers on the snout is somatotopically mapped onto an array of cortical columns in the primary somatosensory cortex defined by the presence of cytoarchitectonically distinct “barrels” in layer 4. This chapter summarizes the microcircuit organization of rodent barrel cortex, including the local network organization of excitatory and inhibitory neurons, and the long-range inputs from thalamic and cortical sources and outputs to intra- and sub-cerebral targets. Key features of the barrel cortex microcircuit are depicted in the form of wiring diagrams and laminar connectivity matrices.

Chapter.  2655 words.  Illustrated.

Subjects: Development of the Nervous System

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