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Hand–foot motor priming in the presence of temporary inability to use hands

Authors
Journal
Visual Cognition
1350-6285
Publisher
Informa UK (Taylor & Francis)
Publication Date
Volume
20
Issue
1
Identifiers
DOI: 10.1080/13506285.2011.639315
Keywords
  • Research Article

Abstract

To verify if the link between observed hand actions and executed foot actions found in aplasics is essentially induced by the constant use of foot substituting the hand, we investigated if the vision of a grasping hand is able to prime a foot response in normals. Participants were required to detect the time-to-contact of a hand grasping an object either with a suitable or a less suitable movement, an experimental paradigm known to induce a priming effect. Participants responded either with the hand or the foot, while having free or bound hands. Results showed that for hand responses motor priming effect was stronger when the hands were free, whereas for foot responses it was stronger when the hands were bound. These data are interpreted as a further evidence that a difficulty to move affects specific cognitive functions and that the vision of a grasping hand may prime a foot response.

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