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Titolo:
SPATIAL INTEGRATION IN COHERENT MOTION DETECTION AND IN THE MOVEMENT AFTEREFFECT
Autore:
VANWEZEL RJA; VERSTRATEN FAJ; FREDERICKSEN RE; VANDEGRIND WA;
Indirizzi:
UNIV UTRECHT,UTRECHT BIOPHYS RES INST,PADUALAAN 8 3584 CH UTRECHT NETHERLANDS MCGILL VIS RES UNIT MONTREAL PQ H3A 1A1 CANADA UNIV UTRECHT,DEPT COMPARAT PHYSIOL 3584 CH UTRECHT NETHERLANDS
Titolo Testata:
Perception
fascicolo: 10, volume: 23, anno: 1994,
pagine: 1189 - 1195
SICI:
0301-0066(1994)23:10<1189:SIICMD>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERCEPTION; PATTERNS; NOISE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
R.J.A. Vanwezel et al., "SPATIAL INTEGRATION IN COHERENT MOTION DETECTION AND IN THE MOVEMENT AFTEREFFECT", Perception, 23(10), 1994, pp. 1189-1195

Abstract

Sensitivity characteristics and spatial integration properties of themotion-detection system are compared with those of the system responsible for the movement aftereffect (MAE), elicited by the same stimulus. This provides new information about the mechanisms involved in MAE generation. A screen was divided into a chequerboard where the squares were filled with random-pixel arrays moving in opposite directions. Changing the size of the squares produced drastic changes in the perceptduring the adaptation phase and in the MAE during the test phase. Onestriking new phenomenon that is described is 'structure from MAE'. The results indicate that the receptive fields of units involved in eliciting the MAE are larger than the receptive-field sizes of units involved in detection and segregation of motion components in the stimulus. Furthermore, the results suggest that the receptive fields contributing to the MAE are involved in complex interactions in which different local motion directions are integrated in pattern-specific ways.

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Documento generato il 03/12/20 alle ore 11:53:10