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Titolo:
Noise, information transmission, and force variability
Autore:
Slifkin, A; Newell, KM;
Indirizzi:
Penn State Univ, Dept Biobehav Hlth, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 h, University Pk, PA 16802 USA 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 EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
fascicolo: 3, volume: 25, anno: 1999,
pagine: 837 - 851
SICI:
0096-1523(199906)25:3<837:NITAFV>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
FITTS LAW; TARDIVE-DYSKINESIA; MOTOR CONTROL; COMPLEXITY; PERFORMANCE; KNOWLEDGE; MOVEMENTS; BEHAVIOR; POSTURE; TREMOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
58
Recensione:
Indirizzi per estratti:
Indirizzo: Slifkin, A Penn6802te Univ, Dept Biobehav Hlth, 267P Recreat Bldg, University Pk, PA 1 Penn State Univ 267P Recreat Bldg University Pk PA USA 16802 1
Citazione:
A. Slifkin e K.M. Newell, "Noise, information transmission, and force variability", J EXP PSY P, 25(3), 1999, pp. 837-851

Abstract

This study was designed to test the hypothesis derived from information theory that increases in the variability of motor responses result from increases in perceptual-motor noise. Young adults maintained isometric force forextended periods at different levels of their maximum voluntary contraction. Force variability (SD) increased exponentially as a function of force level. However, the signal-to-noise ratio (M/SD), an index of information transmission, as well as measures of noise in both the time (approximate entropy) and frequency (power spectrum) domains, changed according to an inverted U-shaped function over the range of force levels. These findings indicatethat force variability is not directly related to noise but that force output noisiness is positively correlated with the amount of information transmitted.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 09:25:35