Document Detail


Hand kinematics of piano playing.
MedLine Citation:
PMID:  21880938     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Dexterous use of the hand represents a sophisticated sensorimotor function. In behaviors such as playing the piano, it can involve strong temporal and spatial constraints. The purpose of this study was to determine fundamental patterns of covariation of motion across joints and digits of the human hand. Joint motion was recorded while 5 expert pianists played 30 excerpts from musical pieces, which featured ∼50 different tone sequences and fingering. Principal component analysis and cluster analysis using an expectation-maximization algorithm revealed that joint velocities could be categorized into several patterns, which help to simplify the description of the movements of the multiple degrees of freedom of the hand. For the thumb keystroke, two distinct patterns of joint movement covariation emerged and they depended on the spatiotemporal patterns of the task. For example, the thumb-under maneuver was clearly separated into two clusters based on the direction of hand translation along the keyboard. While the pattern of the thumb joint velocities differed between these clusters, the motions at the metacarpo-phalangeal and proximal-phalangeal joints of the four fingers were more consistent. For a keystroke executed with one of the fingers, there were three distinct patterns of joint rotations, across which motion at the striking finger was fairly consistent, but motion of the other fingers was more variable. Furthermore, the amount of movement spillover of the striking finger to the adjacent fingers was small irrespective of the finger used for the keystroke. These findings describe an unparalleled amount of independent motion of the fingers.
Authors:
Shinichi Furuya; Martha Flanders; John F Soechting
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2011-08-31
Journal Detail:
Title:  Journal of neurophysiology     Volume:  106     ISSN:  1522-1598     ISO Abbreviation:  J. Neurophysiol.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-14     Completed Date:  2012-04-16     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  0375404     Medline TA:  J Neurophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2849-64     Citation Subset:  IM    
Affiliation:
Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota, USA. auditory.motor@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomechanics
Cluster Analysis
Female
Hand / physiology*
Humans
Male
Movement / physiology*
Music*
Posture / physiology
Principal Component Analysis
Professional Competence*
Psychomotor Performance / physiology*
Time Factors
Grant Support
ID/Acronym/Agency:
NS-027484/NS/NINDS NIH HHS; NS-15018/NS/NINDS NIH HHS; R01 NS015018/NS/NINDS NIH HHS; R01 NS027484/NS/NINDS NIH HHS
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