Interlimb Transfer of Grasp Orientation is Asymmetrical
One the most fundamental aspects of the human motor system is the hemispheric asymmetry seen in behavioral specialization. Hemispheric dominance can be inferred by a contralateral hand preference in grasping. Few studies have considered grasp orientation in the context of manual lateralization and n...
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| Format: | Article |
| Language: | English |
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Wiley
2006-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2006.291 |
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| author | Victor Frak D. Bourbonnais I. Croteau H. Cohen |
| author_facet | Victor Frak D. Bourbonnais I. Croteau H. Cohen |
| author_sort | Victor Frak |
| collection | DOAJ |
| description | One the most fundamental aspects of the human motor system is the hemispheric asymmetry seen in behavioral specialization. Hemispheric dominance can be inferred by a contralateral hand preference in grasping. Few studies have considered grasp orientation in the context of manual lateralization and none has looked at grasp orientation with natural prehension. Thirty right-handed adults performed precision grasps of a cylinder using the thumb and index fingers, and the opposition axis (OA) was defined as the line connecting these two contact points on the cylinder. Subjects made ten consecutive grasps with one hand (primary hand movements) followed by ten grasps with the other hand (trailing movements). Differences between primary and trailing grasps revealed that each hemisphere is capable of programming the orientation of the OA and that primary movements with the right hand significantly influenced OA orientation of the trailing left hand. These results extend the hemispheric dominance of the left hemisphere to the final positions of fingers during prehension. |
| format | Article |
| id | doaj-art-0e9a8d847f104094b49802de4544b8f2 |
| institution | OA Journals |
| issn | 1537-744X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-0e9a8d847f104094b49802de4544b8f22025-08-20T02:01:40ZengWileyThe Scientific World Journal1537-744X2006-01-0161805180910.1100/tsw.2006.291Interlimb Transfer of Grasp Orientation is AsymmetricalVictor Frak0D. Bourbonnais1I. Croteau2H. Cohen3Département de Kinanthropologie, Université Québec á Montréal, Québec, CanadaInstitut de Réaptation de Montréal, CRIR Université Montréal, Québec, CanadaInstitut de Réaptation de Montréal, CRIR Université Montréal, Québec, CanadaMemory and Motor Skills, Disorders Research Centre, Clinique Sainte Anne, Québec, CanadaOne the most fundamental aspects of the human motor system is the hemispheric asymmetry seen in behavioral specialization. Hemispheric dominance can be inferred by a contralateral hand preference in grasping. Few studies have considered grasp orientation in the context of manual lateralization and none has looked at grasp orientation with natural prehension. Thirty right-handed adults performed precision grasps of a cylinder using the thumb and index fingers, and the opposition axis (OA) was defined as the line connecting these two contact points on the cylinder. Subjects made ten consecutive grasps with one hand (primary hand movements) followed by ten grasps with the other hand (trailing movements). Differences between primary and trailing grasps revealed that each hemisphere is capable of programming the orientation of the OA and that primary movements with the right hand significantly influenced OA orientation of the trailing left hand. These results extend the hemispheric dominance of the left hemisphere to the final positions of fingers during prehension.http://dx.doi.org/10.1100/tsw.2006.291 |
| spellingShingle | Victor Frak D. Bourbonnais I. Croteau H. Cohen Interlimb Transfer of Grasp Orientation is Asymmetrical The Scientific World Journal |
| title | Interlimb Transfer of Grasp Orientation is Asymmetrical |
| title_full | Interlimb Transfer of Grasp Orientation is Asymmetrical |
| title_fullStr | Interlimb Transfer of Grasp Orientation is Asymmetrical |
| title_full_unstemmed | Interlimb Transfer of Grasp Orientation is Asymmetrical |
| title_short | Interlimb Transfer of Grasp Orientation is Asymmetrical |
| title_sort | interlimb transfer of grasp orientation is asymmetrical |
| url | http://dx.doi.org/10.1100/tsw.2006.291 |
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