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Titolo:
CENTER-OF-MASS PERCEPTION - PERTURBATION OF SYMMETRY
Autore:
BINGHAM GP; MUCHISKY MM;
Indirizzi:
INDIANA UNIV,DEPT PSYCHOL BLOOMINGTON IN 47405
Titolo Testata:
Perception & psychophysics
fascicolo: 5, volume: 54, anno: 1993,
pagine: 633 - 639
SICI:
0031-5117(1993)54:5<633:CP-POS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
RECOGNITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
G.P. Bingham e M.M. Muchisky, "CENTER-OF-MASS PERCEPTION - PERTURBATION OF SYMMETRY", Perception & psychophysics, 54(5), 1993, pp. 633-639

Abstract

Bingham and Muchisky (1993) found that observers were very accurate in determining the location of the center of mass in planar objects. Systematic errors were affected primarily by object orientation, while random errors varied with the amount of symmetry. Radial and axial reflective symmetry affected errors in different ways. In the current study, we investigated the different effects of axial reflective versus rotational symmetry. All random errors decreased with increasing rotational symmetry. Axial reflective symmetry further reduced errors in the direction perpendicular to the axis. We replicated the effect on systematic error of orientation. However, we also found an effect of the perturbation of symmetry that suggested that observers used an approximation to symmetry. To investigate this possibility, we constructed a series of objects in which axial reflective symmetry was established andthen perturbed by varying amounts. We found that systematic errors were structured by the underlying approximate symmetries, and we discussthe problem of quantifying symmetry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:35:16