A common representation of spatial features drives action and perception: grasping and judging object features within trials

Spatial features of an object can be specified using two different response types: either by use of symbols or motorically by directly acting upon the object. Is this response dichotomy reflected in a dual representation of the visual world: one for perception and one for action? Previously, symboli...

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Bibliographic Details
Published in:	PloS one 2014-05, Vol.9 (5), p.e94744-e94744
Main Authors:	Christiansen, Jens H, Christensen, Jeppe, Grünbaum, Thor, Kyllingsbæk, Søren
Format:	Article
Language:	eng
Subjects:	Adult Biology and Life Sciences Brain damage Female Hand Strength Humans Information processing Judgment - physiology Male Medicine and Health Sciences Motor Activity - physiology Orientation Paradigms Pattern recognition Perception Photic Stimulation Psychology Reaction Time - physiology Representations Sensory perception Social Sciences Space Perception - physiology Spatial discrimination Visual perception Young Adult
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Summary:	Spatial features of an object can be specified using two different response types: either by use of symbols or motorically by directly acting upon the object. Is this response dichotomy reflected in a dual representation of the visual world: one for perception and one for action? Previously, symbolic and motoric responses, specifying location, has been shown to rely on a common representation. What about more elaborate features such as length and orientation? Here we show that when motoric and symbolic responses are made within the same trial, the probability of making the same symbolic and motoric response is well above chance for both length and orientation. This suggests that motoric and symbolic responses to length and orientation are driven by a common representation. We also show that, for both response types, the spatial features of an object are processed independently. This finding of matching object-processing characteristics is also in agreement with the idea of a common representation driving both response types.
ISSN:	1932-6203 1932-6203