Abstract
Visual attention is a process that directs a tiny fraction of the information arriving at primary visual cortex to high-level centers involved in visual working memory and pattern recognition. The chapter discusses a framework for modeling this mechanism in that information flow through the visual hierarchy is regulated by dynamic control of connectivity. A key aspect of this model involves the establishment of an object-centered reference frame for visual working memory as well as object recognition. Psychophysical evidence suggests that the size of the reference frame, or region of interest, has a fixed width of about 30 resolution elements. This model is neuro-biologically plausible, supported by several lines of anatomical and physiological data, and suitable for embedding into a larger computational framework for modeling of neural representations and transformations.
Original language | English |
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Title of host publication | Neurobiology of Attention |
Publisher | Elsevier Inc. |
Pages | 11-17 |
Number of pages | 7 |
ISBN (Print) | 9780123757319 |
DOIs | |
State | Published - 2005 |