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Titolo:
Force and timing variability in rhythmic unimanual tapping
Autore:
Sternad, D; Dean, WJ; 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: 3, volume: 32, anno: 2000,
pagine: 249 - 267
SICI:
0022-2895(200009)32:3<249:FATVIR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR ACTS; TEMPORAL INTERVALS; STIMULUS SEQUENCE; ISOMETRIC TASKS; MOVEMENTS; MODEL; TIME; SYNCHRONIZATION; PERCEPTION; DYNAMICS;
Keywords:
force control; oscillator modeling; rhythmic timing; variability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Sternad, D Penn State Univ, Dept Kinesiol, 266 Recreat Bldg, University Pk, PA 16802 USA Penn State Univ 266 Recreat Bldg University Pk PA USA 16802 USA
Citazione:
D. Sternad et al., "Force and timing variability in rhythmic unimanual tapping", J MOTOR BEH, 32(3), 2000, pp. 249-267

Abstract

In 3 experiments the interdependencies between timing and force productionin unimanual paced and self-paced rhythmic tapping tasks were examined as participants (N = 6 in each experiment) tapped (a) to 1 of 3 target periods(333 ms, 500 ms, and 1,000 ms), while they simultaneously produced a constant peak force (PF) over a 50-s trial; (b) to produce 1 of 3 target forces (5, 10, and 15 N) at their preferred frequency, while keeping their rhythm as invariant as possible; and (c) to all combinations of target force and period. The results showed that (a) magnitudes of force and period were largely independent; (b) variability in timing increased proportionally with tapping period, and the variability in force increased with peak force; (c) force variability decreased at faster tapping rates; and (d) timing variability decreased with increasing force levels. (e) Analysis of tap-to-tap variability revealed adjustments over sequences of taps and an acceleration in the tapping rate in unpaced conditions. The interdependencies of force and time are discussed with respect to the challenges they provide for an oscillator-based account.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 19:46:18