Title

Spurious Dynamics In Somatosensory Cortex

Keywords

Chaotic; Cortical network model; Directional selectivity; Dynamical attractor; Moving stimuli; NMDA

Abstract

Cortical networks are dynamical systems whose task is to process information. However, in addition to 'intended' dynamical behaviors, the sheer complexity of a cortical network's structure - regardless of its precise details - should generate additional 'unintended' dynamical behaviors. Dynamics observed in cortical network models and in the somatosensory cortex suggest that such spurious dynamical behaviors are likely to be pervasive but relatively simple, contributing to - rather than dominating - a network's response to stimuli. Spurious dynamics may be responsible for a variety of experimentally observed intriguing features of cortical dynamics. Because of their distributed origins and emergent nature, such dynamical features, while clearly identifiable, will resist attempts at identifying specific mechanisms to explain them. We describe some of the spurious dynamical phenomena associated with somatosensory cortical response to brushing stimulation, to illustrate how spurious dynamics can affect neurons' functional properties, cortical stimulus representation and, ultimately, perception. © 2002 Elsevier Science B.V. All rights reserved.

Publication Date

9-20-2002

Publication Title

Behavioural Brain Research

Volume

135

Issue

1-2

Number of Pages

75-82

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0166-4328(02)00158-4

Socpus ID

0037145094 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037145094

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