Journal
TRENDS IN COGNITIVE SCIENCES
Volume 10, Issue 11, Pages 502-511Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tics.2006.09.003
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Funding
- NEI NIH HHS [R01 EY 13358, R01 EY 14202] Funding Source: Medline
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During binocular rivalry, conflicting monocular images compete for access to consciousness in a stochastic, dynamical fashion. Recent human neuroirnaging and psychophysicall studies suggest that rivalry entails competitive interactions at multiple neural sites, including sites that retain eye-selective information. Rivalry greatly suppresses activity in the ventral pathway and attenuates visual adaptation to form and motion; nonetheless, some information about the suppressed stimulus reaches higher brain areas. Although rivalry depends on low-level inhibitory interactions, high-level excitatory influences promoting perceptual grouping and selective attention can extend the local dominance of a stimulus over space and time. Inhibitory and excitatory circuits considered within a hybrid model might account for the paradoxical properties of binocular rivalry and provide insights into the neural bases of visual awareness itself.
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