Date: 2005.6.15 (Wed) 13:00-14:15
Place: General Research Building, Room 663
Speaker: Takashi Shinozaki
Title: Non-invasive measurement of perception
Keywords: MEG, vision, binocular rivalry, perceptual alternation, non-invasive measurement

Affiliation: Department of Complexity Science and Engineering,
Graduate School of Frontier Sciences
Position: Graduate Student
Adviser: Tsunehiro Takeda, Laboratory for Biological Complex Systems
Disciplines: brain science
Societies and Conferences: Japan Biomagnetism and Biomagnetics Society, Japan Biorheology Society, Japanese Neural Network Society, The Vision Society of Japan

Bibliography: Takashi Shinozaki, Non-invasive measurement of perception, Human Science Integration Seminar Abstracts, No. 6, pp. 1, 2005.
(Please use this bibliography when you cite this abstract.)

Abstract:
Recent advances in the non-invasive measurements permit to investigate the relationship between a perception and its brain response. However, the response of perceptual transition has not been clarified. To investigate such perceptual transition, the phenomenon named binocular rivalry has been used in psychophysics. Binocular rivalry is perceptual alternation produced by presenting two different images independently to the two eyes. In binocular rivalry, one of the images dominated the perception, and the other is suppressed. The perceptual dominance is determined stochastically, and spontaneously alternates for a few seconds. In this presentation, we discussed the brain processes of perceptual transition with several previous studies of binocular rivalry. First, we introduced some non-invasive measurements for brain responses and the overview of visual information process in the brain. Then, recent studies of binocular rivalry using both invasive and non-invasive measurements were reviewed, and our own studies, non-invasive measurements of binocular rivalry using MEG, were also presented. In addition, we speculated the neural mechanism of perceptual transition through the comparison between those studies.

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