Three-dimensional drawings in isometric conditions : planar segmentation of force trajectory
Normal human subjects grasped an isometric handle with an unrestrained, pronated hand. They were asked to exert forces continuously to draw lemniscates (figure eights) in specified or self-chosen planes and in the presence or absence of a three-dimensional visual feedback cursor and a visual templat...
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| Veröffentlicht in: | Experimental brain research 1992-12, Vol.92 (2), p.326-337 |
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| container_title | Experimental brain research |
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| creator | PELLIZZER, G MASSEY, J. T LURITO, J. T GEORGOPOULOS, A. P |
| description | Normal human subjects grasped an isometric handle with an unrestrained, pronated hand. They were asked to exert forces continuously to draw lemniscates (figure eights) in specified or self-chosen planes and in the presence or absence of a three-dimensional visual feedback cursor and a visual template. In every condition, the mean plane orientation in the force space differed appreciably between the two loops of the figure, as described previously by Soechting and Terzuolo (1987a) for free drawing arm movements. These findings suggest that the planar segmentation of the motor trajectory is not a consequence of joint motion but arises from central constraints related to the production of motor trajectory in space. |
| doi_str_mv | 10.1007/BF00227975 |
| format | Article |
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These findings suggest that the planar segmentation of the motor trajectory is not a consequence of joint motion but arises from central constraints related to the production of motor trajectory in space.</description><subject>Biological and medical sciences</subject><subject>Feedback - physiology</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hand - physiology</subject><subject>Humans</subject><subject>Isometric Contraction - physiology</subject><subject>Male</subject><subject>Psychomotor Performance - physiology</subject><subject>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. 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| ispartof | Experimental brain research, 1992-12, Vol.92 (2), p.326-337 |
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| language | eng |
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| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | Biological and medical sciences Feedback - physiology Female Fundamental and applied biological sciences. Psychology Hand - physiology Humans Isometric Contraction - physiology Male Psychomotor Performance - physiology Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports |
| title | Three-dimensional drawings in isometric conditions : planar segmentation of force trajectory |
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