Feature-specific perceptual processing dissociates action from recognition.
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.
Brown
Liana E
LE
Department of Psychology, Pennsylvania State University, University Park, Pennsylvania 16802, USA. liana1@psu.edu
Moore
Cathleen M
CM
Rosenbaum
David A
DA
D000293:Adolescent; D000328:Adult; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D011897:Random Allocation; D011930:Reaction Time; D021641:Recognition, Psychology; D014796:Visual Perception / Q000502:physiology*