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Titolo:
Coordination of grip configurations as a function of force output
Autore:
Sharp, WE; Newell, KM;
Indirizzi:
Penn State Univ, Dept Kinesiol, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 l, University Pk, PA 16802 USA
Titolo Testata:
JOURNAL OF MOTOR BEHAVIOR
fascicolo: 1, volume: 32, anno: 2000,
pagine: 73 - 82
SICI:
0022-2895(200003)32:1<73:COGCAA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREHENSION; REDUNDANCY; FINGERS;
Keywords:
grip configurations; isometric force; prehension;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Newell, KM Penn State Univ, Dept Kinesiol, 146 Recreat Bldg, University Pk, PA 16802 USA Penn State Univ 146 Recreat Bldg University Pk PA USA 16802 USA
Citazione:
W.E. Sharp e K.M. Newell, "Coordination of grip configurations as a function of force output", J MOTOR BEH, 32(1), 2000, pp. 73-82

Abstract

In this investigation, the authors examined the coordination and control of force production by the digits of the hand as a function of criterion force level and grip configuration. Each adult participant (N = 6: 3 men and 3women) was required to place the thumb and a finger (or fingers) upon loadcells that were fixed to a grasping apparatus that was clamped to a table. In the task, participants had to match a criterion continuous constant total force level displayed on a computer screen. There were 10 trials at eachgrip configuration and criterion force level combination on each of 3 consecutive days. The results showed that (a) different grip configurations minimized error at each force level; (b) there was a specific digit pairing within a given grip configuration that produced the highest correlation of force output; (c) the correlation between the force output of digits generally increased at higher force levels; (d) error was reduced at each force level and grip configuration over the practice period; and (e) the organization of the force output of each digit varied as a function of digit, force level, grip configuration, and practice. The findings are consistent with thehypothesis that coordination of the digits in prehension is reflective of an adaptive, task-specific solution that is modified with practice.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 13:29:43