caa a22 4500 397581866 CHVBK 20180308164909.0 cr unu---uuuuu 161202e199609 xx s 000 0 eng 10.1093/cercor/6.5.701 doi (NATIONALLICENCE)oxford-10.1093/cercor/6.5.701 A Model of Color Vision Based on Cortical Reentry [Elektronische Daten] [Jonathan Wray, Gerald M. Edelman] It is known that the perceived color of an object depends on the context in which it is viewed, its reflectance properties and the spectral distribution of the illuminating light. What is not known, however, is how the visual system functions so that color percepts depend upon the integration of local and contextual cues. While phenomenological theories of color vision exist, robust neurally based theories consistent with psychophysical observations are sparse. In the present study we develop such a theory and establish its self-consistency by computer simulations of cerebral cortical areas involved in color perception. The simulations test the hypothesis that long-range reciprocal connections within and between cortical areas mediate a dynamic process of reentry that integrates contextual cues into the color percept. When stimuli similar to those used in psychophysical testing of contextual influence were used, firing patterns consistent with psychophysical data on color constancy and color induction in humans were observed. Selective disruption of reciprocal inter- or intra-areal connections reduced the correspondence between the model's responses and the psychophysical data. The findings are consistent with the proposal that reentrant interactions within and between cortical areas provide a major basis for the context-sensitive aspects of color vision. © 1996 Oxford University Press Articles nationallicence Wray Jonathan The Neurosciences Institute, 10640 John Jay Hopkins Drive, San Diego, CA 92121, USA aut Edelman Gerald M. The Neurosciences Institute, 10640 John Jay Hopkins Drive, San Diego, CA 92121, USA aut Cerebral Cortex Oxford University Press 6/5(1996-09), 701-716 1047-3211 6:5<701 1996 6 cercor https://doi.org/10.1093/cercor/6.5.701 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/cercor/6.5.701 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wray Jonathan The Neurosciences Institute, 10640 John Jay Hopkins Drive, San Diego, CA 92121, USA aut NATIONALLICENCE 700 1- Edelman Gerald M. The Neurosciences Institute, 10640 John Jay Hopkins Drive, San Diego, CA 92121, USA aut NATIONALLICENCE 773 0- Cerebral Cortex Oxford University Press 6/5(1996-09), 701-716 1047-3211 6:5<701 1996 6 cercor Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford