CHRONOTOPOGRAPHICAL STUDY OF THE PATTERN‐EVOKED RESPONSE AND BINOCULAR SUMMATION*
1982; Wiley; Volume: 388; Issue: 1 Linguagem: Inglês
10.1111/j.1749-6632.1982.tb50826.x
ISSN1749-6632
Autores Tópico(s)Mechanical and Optical Resonators
ResumoAnnals of the New York Academy of SciencesVolume 388, Issue 1 p. 635-641 CHRONOTOPOGRAPHICAL STUDY OF THE PATTERN-EVOKED RESPONSE AND BINOCULAR SUMMATION* Nicole Lesevre, Nicole Lesevre Laboratoire d'Electrophysiologie et Neurophysiologie Appliquee (L.E.N.A.) Hǒpital de la Salpětriére 75651 Paris Cedex 13 FranceSearch for more papers by this author Nicole Lesevre, Nicole Lesevre Laboratoire d'Electrophysiologie et Neurophysiologie Appliquee (L.E.N.A.) Hǒpital de la Salpětriére 75651 Paris Cedex 13 FranceSearch for more papers by this author First published: June 1982 https://doi.org/10.1111/j.1749-6632.1982.tb50826.xCitations: 11 * This work was achieved with the help of the lnstitut National de la Santé et de la Recherche Médicale (INSERM) Grant 78.2002.6.CA 413. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat References 1 Perry, N. W., D. G. Chllders & E. McCay. 1968. Vis. Res. 8: 567–573. 2 This brightness matching experiment was inspired by that utilized by Fry and Bartley in order to show that border contrast was the main element producing Fechner's paradox (Am. J. Ophthalmol. 1933. 6: 687–693). Part of the psychophysical results obtained with this method utilizing the Fechner's paradox has been presented by Bourdy and Lesevre at the European Conference on Visual Perception (October 1979, Noordwijkerhout, Holland). 3 Each pattern reversal occured every 620 msec; each averaged evoked potential was obtained from 150 successive reversals. The averaging process was computed offline after elimination of responses occurring during an eye movement. 4 Binocular vision was studied by means of various tests in order to evaluate heterophoria, aniseiconia, and stereoscopic vision. Eye dominance was appreciated by a "sighting" test: 3 subjects showed a right eye dominance, the two others a left eye dominance. 5 The highest luminance level tested was 4 cd/m2. From one session to the other, series of neutral filters of density. 1, 0.2, 0.5, and 0.9 were utilized. Before each session the subject was dark adapted for 20 minutes. 6 This N140 latency summation index was obtained as follows: K (lat) - [lat (RE) + lat (LE)]/2 lat (B), where lat (RE) and lat (LE) are the peak latencies of the right eye and of the left eye stimulation responses and lat (B) is the latency obtained to the fused binocular viewing stimulation. 7 The decrease of the summation index for the lower contrast levels is statistically significant (P < 0.05: Wilcoxon matched pairs signed-rank test) for the 5 subjects; the decrease for the higher levels is significant for 3 subjects out of 5. 8 Burns, B. D., W. Heron & B. Grafstein. 1960. Am. J. Physiol. 198: 200–204. 9 Jeffreys, D. 1977. The physiological significance of pattern visual evoked potentials. In Visual Evoked Potentials in Man: New Developments. J.E. Desmedt, Ed. pp. 134–183. Clarendon Press, Oxford . 10 Smith, A. T. & D. A. Jeffreys. 1979. Evoked potential evidence for differences in binotularity between striate and prestriate regions of human visual cortex. Exp. Brain. Res. 36: 375–380. 11 Lesevre, N. & J. P. Joseph. 1979. Electroenceph. Clin. Neurophysiol. 47: 183–203. See also N. Lesevre. Chronotopographical analysis of the human evoked potential in relation of the visual field. This volume. Citing Literature Volume388, Issue1Evoked PotentialsJune 1982Pages 635-641 ReferencesRelatedInformation
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