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Neural substrates of visual percepts, imagery, and hallucinations

Published online by Cambridge University Press:  19 March 2003

Stephen Grossberg
Stephen Grossberg
Affiliation:
Department of Cognitive and Neural Systems and Center for Adaptive Systems, Boston University, Boston, MA 02215 steve@bu.edu http://www.cns.bu.edu/Profiles/Grossberg
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Abstract

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Recent neural models clarify many properties of mental imagery as part of the process whereby bottom-up visual information is influenced by top-down expectations, and how these expectations control visual attention. Volitional signals can transform modulatory top-down signals into supra-threshold imagery. Visual hallucinations can occur when the normal control of these volitional signals is lost.

Type
Brief Report
Information
Behavioral and Brain Sciences , Volume 25 , Issue 2 , April 2002 , pp. 194 - 195
Copyright
© 2002 Cambridge University Press