Records |
Author |
Liebermann, D.G.; Levin, M.F.; McIntyre, J.; Weiss, P.L.; Berman, S. |
Title |
Arm path fragmentation and spatiotemporal features of hand reaching in healthy subjects and stroke patients |
Type |
Journal Article |
Year |
2010 |
Publication |
Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference |
Abbreviated Journal |
Conf Proc IEEE Eng Med Biol Soc |
Volume |
2010 |
Issue |
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Pages |
5242-5245 |
Keywords |
Aged; Aged, 80 and over; Analysis of Variance; Arm/*physiology; Biomechanics/physiology; Female; Hand/*physiology; *Health; Humans; Male; Middle Aged; Movement/*physiology; Posture/physiology; Principal Component Analysis; Stroke/*physiopathology; Time Factors |
Abstract |
Arm motion in healthy humans is characterized by smooth and relatively short paths. The current study focused on 3D reaching in stroke patients. Sixteen right-hemiparetic stroke patients and 8 healthy adults performed 42 reaching movements towards 3 visual targets located at an extended arm distance. Performance was assessed in terms of spatial and temporal features of the movement; i.e., hand path, arm posture and smoothness. Differences between groups and within subjects were hypothesized for spatial and temporal aspects of reaching under the assumption that both are independent. As expected, upper limb motion of patients was characterized by longer and jerkier hand paths and slower speeds. Assessment of the number of sub-movements within each movement did not clearly discriminate between groups. Principal component analyses revealed specific clusters of either spatial or temporal measures, which accounted for a large proportion of the variance in patients but not in healthy controls. These findings support the notion of a separation between spatial and temporal features of movement. Stroke patients may fail to integrate the two aspects when executing reaching movements towards visual targets. |
Address |
Physical Therapy Dept., Sackler Faculty of Medicine, Tel Aviv University, 69978 Israel. dlieberm@post.tau.ac.il |
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English |
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1557-170X |
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PMID:21096047 |
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30 |
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Author |
Liebermann, D.G.; Franks, I. M. |
Title |
The use of feedback-based technologies in skill acquisition |
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Book Chapter |
Year |
2004 |
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Notational analysis of Sport and Coaching Science |
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E & FN Spon Pub |
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M. Hughes; I.M. Franks |
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45 |
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Author |
Carmeli E.; Liebermann, D.G. |
Title |
The Function of the Aging Hand |
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Book Chapter |
Year |
2007 |
Publication |
The Geriatric Rehabilitation Manual |
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Elsevier |
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NY |
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T. L. Kauffman; M. Moran; J. Barr |
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46 |
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Author |
Liebermann, D.G.; Franks I.M. |
Title |
Video-feedback and information technologies |
Type |
Book Chapter |
Year |
2008 |
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Essentials of notational analysis |
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E & FN Spon Pub |
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I.M. Franks; M. Hughes |
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48 |
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Author |
Goodman, D.; Liebermann, D.G. |
Title |
Time-to-contact as a determiner of action: vision and motor control |
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Book Chapter |
Year |
1992 |
Publication |
Vision and Motor Control |
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335-349 |
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Elsevier Pub. Co |
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Amsterdam, Holland |
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D. Elliott; J. Proteau |
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43 |
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