Differential influence of hands posture on mental rotation of hands and feet in left and right handers.

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Serval ID
serval:BIB_56EF74AE5D47
Type
Article: article from journal or magazin.
Collection
Publications
Title
Differential influence of hands posture on mental rotation of hands and feet in left and right handers.
Journal
Experimental Brain Research
Author(s)
Ionta S., Blanke O.
ISSN
1432-1106 (Electronic)
ISSN-L
0014-4819
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
195
Number
2
Pages
207-217
Language
english
Abstract
The representation of the body in the brain is continuously updated with regard to peripheral factors such as position or movement of body parts. In the present study, we investigated the effects of arm posture on the mental rotation of hands and feet. Sixteen right-handed and ten left-handed participants verbally judged the laterality of visually presented pictures of hands and feet in two different postural conditions. In one condition they placed their right hand on their right knee and their left hand behind the back, in the other condition the hand position was reversed. For right-handed participants response times for the laterality judgment of right hands increased when participants kept their right hand behind the back. This was not found for images of the left hand nor for images of the feet. For the left-handed participants, there was no effect of arm posture on hand or feet stimulus judgments. Thus, the body-part posture effect on mental rotation was found to be specific for the side and the body part for which the posture was modified only in right-handed participants, but it was absent for left-handed participants. For both samples, we also found a progressive disruption of the mental rotation function depending on the view from which the body parts were seen (i.e. dorsal, thumb/big toe, palm/plantar, little finger/toe). Posture and view effects on body parts representations are discussed with respect to proprioception, handedness, visual familiarity and the influence of anatomical joint constraints on motor imagery.
Keywords
Adolescent, Adult, Analysis of Variance, Arm, Female, Foot, Functional Laterality, Hand, Humans, Imagination, Leg, Male, Orientation, Photic Stimulation, Posture, Reaction Time, Recognition (Psychology), Rotation, Vision, Ocular, Young Adult
Pubmed
Web of science
Open Access
Yes
Create date
28/01/2015 13:16
Last modification date
01/10/2019 7:18
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