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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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Stimulus-driven Coordination of Cortical Cell Assemblies and Propagation of Gestalt Belief in V1

Stimulus-driven Coordination of Cortical Cell Assemblies and Propagation of Gestalt Belief in V1

Chapter:
(p.169) 12 Stimulus-driven Coordination of Cortical Cell Assemblies and Propagation of Gestalt Belief in V1
Source:
Dynamic Coordination in the Brain
Author(s):

Yves Frégnac

Pedro V. Carelli

Marc Pananceau

Cyril Monier

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262014717.003.0012

This chapter explores dynamic coordination in the primary sensory cortex of mammals during low-level (non-attention-related) perception. It considers the possible existence of subcortical or cortical supervisors in higher mammals and explains how coordination is generated by the sensory drive and amplified by built-in anisotropies in the network connectivity. Drawing on synaptic functional imaging (at the intracellular level) and real-time voltage-sensitive dye network imaging (at the functional map level), it illustrates the role of intracortical depolarizing waves whose functional features support the hypothesis of a dynamic association field. These waves help propagate synaptic modulation in space and time via lateral (and perhaps feedback) connectivity, which explains the emergence of illusions predicted by Gestalt theory. The chapter also explains how lateral propagation waves are reconstructed from synaptic echoes and looks at the propagation of orientation belief.

Keywords:   dynamic coordination, primary sensory cortex, mammals, perception, depolarizing waves, synaptic modulation, illusions, Gestalt theory, propagation waves, belief

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