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Titolo:
Visual perception of the relative phasing of human limb movements
Autore:
Bingham, GP; Schmidt, RC; Zaal, FTJM;
Indirizzi:
Indiana Univ, Dept Psychol, Bloomington, IN 47405 USA Indiana Univ Bloomington IN USA 47405 Psychol, Bloomington, IN 47405 USA Coll Holy Cross, Worcester, MA 01610 USA Coll Holy Cross Worcester MA USA01610 oly Cross, Worcester, MA 01610 USA
Titolo Testata:
PERCEPTION & PSYCHOPHYSICS
fascicolo: 2, volume: 61, anno: 1999,
pagine: 246 - 258
SICI:
0031-5117(199902)61:2<246:VPOTRP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
COORDINATED RHYTHMIC MOVEMENTS; INTERLIMB COORDINATION; BIOLOGICAL MOTION; CRITICAL FLUCTUATIONS; TRANSITIONS; DYNAMICS; SYMMETRY; MODELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Bingham, GP Indiana Univ, Dept Psychol, Bloomington, IN 47405 USA Indiana Univ Bloomington IN USA 47405 oomington, IN 47405 USA
Citazione:
G.P. Bingham et al., "Visual perception of the relative phasing of human limb movements", PERC PSYCH, 61(2), 1999, pp. 246-258

Abstract

Studies of bimanual coordination have found that only two stable relative phases (0 degrees and 180 degrees) are produced when a participant rhythmically moves two joints in different Limbs at the same frequency. Increasing the frequency of oscillation causes an increase in relative phase variability in both of these phase modes. However, relative phasing at 180 degrees is more variable than relative phasing at 0 degrees, and when the frequency of oscillation reaches a critical frequency, a transition to 0 degrees occurs. These results have been replicated when 2 people have coordinated theirrespective limb movements using vision. This inspired us to investigate the visual perception of relative phase. In Experiment 1, recordings of humaninterlimb oscillations exhibiting different frequencies, mean relative phases, and different amounts of phase variability were used to generate computer displays of spheres oscillating either side to side in a frontoparallelplane or in depth. Participants judged the stability of relative phase. Judgments covaried with phase variability only when the mean phase was 0 degrees or 180 degrees. Otherwise, judgments covaried with mean relative phase,even after extensive instruction and demonstration. In Experiment 2, mean relative phase and phase variability were manipulated independently via simulations, and participants were trained to perceive phase variability in testing sessions in which mean phase was held constant. The results of Experiment 1 were replicated. The HKB model was fitted to mean judgment standard deviations.

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Documento generato il 25/11/20 alle ore 04:42:52