Home  News  Events  Album  Links  Japanese Version
Main Menu


Lost Password?

Register now!
2005-06-15: Human SCINT Seminar (6)
Poster Mihoko Otake  Registed 2005-12-25 22:26 (1020 hits)

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.)

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.

References: (Missing items are literatures in Japanese)
[1] S. Ogawa, T. M. Lee, A. R. Kay, & D. W. Tank: “Brain magnetic resonance imaging with contrast dependent on blood oxygenation”, PNAS, Vol.87, No.24, pp.9868–72 (1990)
[2] D. J. Heeger & D. Ress: ”What does fmri tell us about neuronal activity?”, Nature Rev. Neurosci., Vol.3, No.2, pp.142–151 (2002)
[4] D. C. Van Essen & J. L. Gallant: ”Neural mechanisms of form and motion processing in the primate visual system”, Neuron, Vol.13, No.1, pp.1–10 (1994)
[5] J. C. McCarthy, A. Puce, J. C. Gore, & T. Allison: “Facespecific processing in the human fusiform gyrus”, J. Cogn. Neurosci, Vol.9, pp.604–609 (1997)
[6] R. Epstein & N. Kanwisher: ”A cortical representation of the local visual environment”, Nature, Vol.392, pp.598–601 (1998)
[7] C. Wheatstone: “On some remarkable, and hitherto unobserved, phenomena of binocular vision”, Philosophical Transactions on Royal Society of London, Vol.128, pp.371–394 (1838)
[8] R. Blake & N. K. Logothetis: “Visual competition”, Nature Rev. Neurosci., Vol.3, No.1, pp.13–23 (2002)
[9] D. A. Leopold & N. K. Logothetis: “Activity chanes in early visual cortex reflect monkeys’ percepts during binocular rivalry”, Nature, Vol.379, No.6565, pp.549-553 (1996)
[10] R. Srinivasan, D. P. Russell, G. M. Edelman, & G. Tononi: “Increased synchronization of neuromagnetic responses during conscious perception”, J. Neurosci., Vol.19, No.13, pp.5435–5448 (1999)
[11] F. Tong, K. Nakayama, J. T. Vaughan, & N. Kanwisher: “Binocular rivalry and visual awareness in human extrastriate cortex”, Neuron, Vol.21, pp.753–759 (1998)
[12] A. Polonsky, R. Blake, J. Braun, & D. J. Heeger: “Neuronal activity in human primary visual cortex correlates with perception during binocular rivalry”, Nature Neurosci., Vol.3, No.11, pp.1153–1159 (2000)
[13] E. D. Lumer, K. J. Friston, & R. Geraing: “Neural correlates of perceptual rivalry in the human brain”, Science, Vol.280, pp.1930–1934 (1998)
[14] F. Valle-Incl´an, S. A. Hackley, C. de Labra, & A. Alvarez: “Early visual processing during binocular rivalry studied with visual evoked potentials”, Neuroreport, Vol.10, No.1, pp.21–25 (1999)
[15] T. Murata, N. Matsui, S. Miyauchi, Y. Kakita, & T. Yanagida: ”Discrete stochastic process underlying perceptual rivalry”, Neuroreport, Vol.14, No.10, pp.1347–1352 (2003)
Copyright (C) 2005-6, Human Science Integration Program - Humans. All right reserved.