EBBS-abstracts

EBBS-abstracts Exp. Brain Res. 36, R1-R25 (1979) Experimental Brain Research @ Springer-Verlag 1979 European Brain and Behaviour Society (EBBS) Abstracts of the Annual General Meeting in Paris, September 22-26, 1979 R3 Sigma-Movement Perception and Optokinetic Nystagmus Elicited by Stroboscopically Illuminated Stereopatterns B. Adler and O.-J. Griisser Department of Physiology, Freie Universit/it Berlin, D-1000 Berlin Stroboscopically illuminated periodic visual patterns seen with one or both eyes elicit an apparent movement perception (Sigma-movement) and an optokinetic nystagmus (Sigma-OKN) when eye pursuit movements are initiated at an angular speed Ve = Ps- fs [degrees. s - q Ps is the period of the stimulus pattern, fs the flash frequency. The Sigma-movement is attributed to the interaction between efference copy signals and the afferent visual information. One of the levels of interaction of these two signals was assumed to be beyond the level of retinotopic projection. (1) Sigma-phenomena are also present with periodic spatial stimulus patterns seen only with the cyclopean retina (24 vertical stereostripes). The random dot patterns presented to the left and the right eye were stroboscopically illuminated by polarized light and seen through glasses with crossed polarization filters (flash frequency fs, 1-40 flashes, s-l). The angular speed Ve of the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experimental Brain Research Springer Journals

EBBS-abstracts

Experimental Brain Research, Volume 36 (3) – Aug 1, 1979

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Publisher
Springer Journals
Copyright
Copyright © 1979 by Springer-Verlag
Subject
Biomedicine; Neurosciences; Neurology
ISSN
0014-4819
eISSN
1432-1106
DOI
10.1007/BF00238527
Publisher site
See Article on Publisher Site

Abstract

Exp. Brain Res. 36, R1-R25 (1979) Experimental Brain Research @ Springer-Verlag 1979 European Brain and Behaviour Society (EBBS) Abstracts of the Annual General Meeting in Paris, September 22-26, 1979 R3 Sigma-Movement Perception and Optokinetic Nystagmus Elicited by Stroboscopically Illuminated Stereopatterns B. Adler and O.-J. Griisser Department of Physiology, Freie Universit/it Berlin, D-1000 Berlin Stroboscopically illuminated periodic visual patterns seen with one or both eyes elicit an apparent movement perception (Sigma-movement) and an optokinetic nystagmus (Sigma-OKN) when eye pursuit movements are initiated at an angular speed Ve = Ps- fs [degrees. s - q Ps is the period of the stimulus pattern, fs the flash frequency. The Sigma-movement is attributed to the interaction between efference copy signals and the afferent visual information. One of the levels of interaction of these two signals was assumed to be beyond the level of retinotopic projection. (1) Sigma-phenomena are also present with periodic spatial stimulus patterns seen only with the cyclopean retina (24 vertical stereostripes). The random dot patterns presented to the left and the right eye were stroboscopically illuminated by polarized light and seen through glasses with crossed polarization filters (flash frequency fs, 1-40 flashes, s-l). The angular speed Ve of the

Journal

Experimental Brain ResearchSpringer Journals

Published: Aug 1, 1979

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