Competition for consciousness among visual events: The psychophysics of reentrant visual processes

Journal Of Experimental Psychology-General 129 (4):481-507 (2000)
  Copy   BIBTEX

Abstract

Advances in neuroscience implicate reentrant signaling as the predominant form of communication between brain areas. This principle was used in a series of masking experiments that defy explanation by feed-forward theories. The masking occurs when a brief display of target plus mask is continued with the mask alone. Two masking processes were found: an early process affected by physical factors such as adapting luminance and a later process affected by attentional factors such as set size. This later process is called masking by object substitution, because it occurs whenever there is a mismatch between the reentrant visual representation and the ongoing lower level activity. Iterative reentrant processing was formalized in a computational model that provides an excellent fit to the data. The model provides a more comprehensive account of all forms of visual masking than do the long-held feed-forward views based on inhibitory contour interactions.

Similar books and articles

Analytics

Added to PP
2009-01-28

Downloads
581 (#26,303)

6 months
147 (#17,328)

Historical graph of downloads
How can I increase my downloads?

Author's Profile

Ronald A. Rensink
University of British Columbia