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Titolo:
MOTION INTEGRATION ACROSS DIFFERING IMAGE FEATURES
Autore:
SHIFFRAR M; LI XJ; LORENCEAU J;
Indirizzi:
RUTGERS STATE UNIV,CTR NEUROSCI,197 UNIV AVE NEWARK NJ 07102 RUTGERS STATE UNIV,DEPT PSYCHOL NEWARK NJ 07102 UNIV PARIS 05,EXPTL PSYCHOL LAB PARIS FRANCE
Titolo Testata:
Vision research
fascicolo: 15, volume: 35, anno: 1995,
pagine: 2137 - 2146
SICI:
0042-6989(1995)35:15<2137:MIADIF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONKEY VISUAL-CORTEX; PERCEIVED DIRECTION; CONTOUR PERCEPTION; APERTURE PROBLEM; COHERENT MOTION; MOVING LINES; DEPENDS; DISCONTINUITY; SEGMENTATION; MECHANISMS;
Keywords:
APERTURE PROBLEM; VELOCITY INTEGRATION; COHERENCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
M. Shiffrar et al., "MOTION INTEGRATION ACROSS DIFFERING IMAGE FEATURES", Vision research, 35(15), 1995, pp. 2137-2146

Abstract

To interpret the projected image of a moving object, the visual system must integrate motion signals across different image regions. Traditionally, researchers have examined this process by focusing on the integration of equally ambiguous motion signals. However, when the motions of complex, multi-featured images are measured through spatially limited receptive fields, the resulting motion measurements have varying degrees of ambiguity. In a series of experiments, we examine how humanobservers interpret images containing motion signals of differing degrees of ambiguity. Subjects judged the perceived coherence of images consisting of an ambiguously translating grating and an unambiguously translating random dot pattern. Perceived coherence of the dotted grating depended upon the degree of concurrence between the velocities of the grating terminators and dots. Depth relationships also played a critical role in the motion integration process, When terminators were suppressed with occlusion cues, coherence increased. When dots and gratings were presented at different depth planes, coherence decreased. We use these results to outline the conditions under which the visual system uses unambiguous motion signals to interpret object motion.

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Documento generato il 25/11/20 alle ore 04:50:03