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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 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 (down) 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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Publisher Place of Publication Editor
Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 1557-170X ISBN Medium
Area Expedition Conference
Notes PMID:21096047 Approved no
Call Number Serial 30
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Author Liebermann, D.G.; Franks, I. M.
Title The use of feedback-based technologies in skill acquisition Type Book Chapter
Year 2004 Publication Notational analysis of Sport and Coaching Science Abbreviated Journal
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Publisher E & FN Spon Pub Place of Publication Editor M. Hughes; I.M. Franks
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Notes Approved no
Call Number Serial 45
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Author Carmeli E.; Liebermann, D.G.
Title The Function of the Aging Hand Type Book Chapter
Year 2007 Publication The Geriatric Rehabilitation Manual Abbreviated Journal
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Publisher Elsevier Place of Publication NY Editor T. L. Kauffman; M. Moran; J. Barr
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Notes Approved no
Call Number Serial 46
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Author Liebermann, D.G.; Franks I.M.
Title Video-feedback and information technologies Type Book Chapter
Year 2008 Publication Essentials of notational analysis Abbreviated Journal
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Publisher E & FN Spon Pub Place of Publication Editor I.M. Franks; M. Hughes
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Notes Approved no
Call Number Serial 48
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Author Goodman, D.; Liebermann, D.G.
Title Time-to-contact as a determiner of action: vision and motor control Type Book Chapter
Year 1992 Publication Vision and Motor Control Abbreviated Journal
Volume Issue Pages 335-349
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Publisher Elsevier Pub. Co Place of Publication Amsterdam, Holland Editor D. Elliott; J. Proteau
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ISSN ISBN Medium
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Notes Approved no
Call Number Serial 43
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