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Close binding of identity and location in visual feature perceptionThe binding of identity and location information in disjunctive feature search was studied. Ss searched a heterogeneous display for a color or a form target, and reported both target identity and location. To avoid better than chance guessing of target identity (by choosing the target less likely to have been seen), the difficulty of the two targets was equalized adaptively; a mathematical model was used to quantify residual effects. A spatial layout was used that minimized postperceptual errors in reporting location. Results showed strong binding of identity and location perception. After correction for guessing, no perception of identity without location was found. A weak trend was found for accurate perception of target location without identity. We propose that activated features generate attention-calling "interrupt" signals, specifying only location; attention then retrieves the properties at that location.
Document ID
20050000869
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Johnston, J. C.
(NASA Ames Research Center Moffett Field, CA United States)
Pashler, H.
Date Acquired
August 22, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Journal of experimental psychology. Human perception and performance
Volume: 16
Issue: 4
ISSN: 0096-1523
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

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