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Dynamic Coordination in the BrainFrom Neurons to Mind$
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Christoph von der Malsburg, William A. Phillips, and Wolf Singer

Print publication date: 2010

Print ISBN-13: 9780262014717

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262014717.001.0001

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Cortical Circuits

Cortical Circuits

Consistency and Variability across Cortical Areas and Species

Chapter:
(p.25) 2 Cortical Circuits
Source:
Dynamic Coordination in the Brain
Author(s):

Jon H. Kaas

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262014717.003.0002

The local circuits in the neocortex of mammals consists of neurons that need to obtain reliably meaningful information from their dominant activating inputs and to alter their responses to these inputs in relation to inputs that are activating other local cortical circuits. Both of these tasks are mediated by structural features in the neocortex. This chapter discusses the structural features of mammalian neocortex as well as the features that allow dynamic interaction among neurons in different columns. The focus is on the complex variability within and across nervous systems involving neuron densities and proportions to glia and other nonneural cells. The chapter also looks at dendritic arbors of cortical pyramidal cells and how they vary across cortical areas and species, patterns of intrinsic horizontal areal connections, and feedback connections from higher to lower areas in hierarchies of cortical areas.

Keywords:   neocortex, mammals, neurons, nervous systems, glia, dendritic arbors, pyramidal cells, cortical areas, feedback connections, local cortical circuits

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