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Feature-specific perceptual processing dissociates action from recognition.

Authors
  • Brown, Liana E
  • Moore, Cathleen M
  • Rosenbaum, David A
Type
Published Article
Journal
Journal of experimental psychology. Human perception and performance
Publication Date
Dec 01, 2002
Volume
28
Issue
6
Pages
1330–1344
Identifiers
PMID: 12542131
Source
Medline
License
Unknown

Abstract

Does visual processing differ for action and recognition? To address this question, the authors capitalized on research showing that color is preferred over binocular disparity in the ventral (recognition) stream, whereas disparity is preferred over color in the dorsal (action) stream. Participants searched for oblique targets among vertical distractors in displays defined only by color or disparity. Action-task participants stamped the target with a handheld block, whereas recognition-task participants lifted the block through a target-compatible gap. Analyses of reaction time and time-varying hand orientation showed that disparity and color displays were processed equally efficiently during action, but disparity was processed less efficiently than color during recognition. The results suggest that visual processing differs for action and recognition.

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