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Wendy Huddleston, Dr. (Alumnus)
Research Scientist (Postdoctoral Fellow) |
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The neural level at which conscious visual perception occurs has been debated over one century. Some investigators argue perception is instantiated as early as the lateral geniculate nucleus of the thalamus or primary visual cortex. Others contend perception is a higher order process requiring frontoparietal involvement. One simple tool used to study visual perception is binocular rivalry; the perceptual alternations following the dichoptic presentation of different patterns. Binocular rivalry, like other ambiguous stimuli, permits the dissociation of perception from sensation, and enables the study of the mechanisms underlying the former. The global aim of my research is to study the exact role of the parietal areas in visual perception. Specifically, I am investigating the temporal patterns of activity in parietal cortex during binocular rivalry and compare this with activity in striate visual areas. New insights into the timing of activity in parietal cortex in relationship to areas earlier in the visual processing stream will improve our understanding of the potential role of parietal cortex in mediating the alternations in conscious visual perception.
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