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Titolo: CENTEROFMASS 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:
 00315117(1993)54:5<633:CPPOS>2.0.ZU;29
 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, "CENTEROFMASS PERCEPTION  PERTURBATION OF SYMMETRY", Perception & psychophysics, 54(5), 1993, pp. 633639
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