Orientation priming of grasping decision for drawings of objects and blocks, and words.
This study tested the influence of orientation priming on grasping decisions. Two groups of 20 healthy participants had to select a preferred grasping orientation (horizontal, vertical) based on drawings of everyday objects, geometric blocks or object names. Three priming conditions were used: congruent, incongruent and neutral. The facilitating effects of priming were observed in the grasping decision task for drawings of objects and blocks but not object names. The visual information about congruent orientation in the prime quickened participants' responses but had no effect on response accuracy. The results are discussed in the context of the hypothesis that an object automatically potentiates grasping associated with it, and that the on-line visual information is necessary for grasping potentiation to occur. The possibility that the most frequent orientation of familiar objects might be included in object-action representation is also discussed.
Laboratoire d'Etude des Mécanismes Cognitifs, Université Lumière Lyon 2, Lyon, France. hanna.chainay@univ-lyon2.fr
Hanna
H
Chainay
Lucie
L
Naouri
Alice
A
Pavec
D000328:Adult; D003463:Cues; D003657:Decision Making; D005260:Female; D018737:Hand Strength; D006801:Humans; D008297:Male; D009949:Orientation; D010364:Pattern Recognition, Visual; D011597:Psychomotor Performance; D011930:Reaction Time; D021641:Recognition, Psychology; D055815:Young Adult
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