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Simultaneous Recordings of Visual Cortex and Superior Colliculus Field Potentials in the Rabbit

Published online by Cambridge University Press:  18 September 2015

Stephane Molotchnikoff ,
Michel Dubuc  and
Jean Real Brunette
Stephane Molotchnikoff*
Affiliation:
Visual Physiology Laboratory of the Department of Ophthalmology, Maisonneuve-Rosemont Hospital, Université de Montréal Biology department, Universite de Montreal
Michel Dubuc
Affiliation:
Visual Physiology Laboratory of the Department of Ophthalmology, Maisonneuve-Rosemont Hospital, Université de Montréal was supported by training grant No. 217-617-489 of the Ministère de l’Education du Québec
Jean Real Brunette
Affiliation:
Visual Physiology Laboratory of the Department of Ophthalmology, Maisonneuve-Rosemont Hospital, Université de Montréal
*
Laboratoire de Physiologic Visuelle — J-1, 5689, Boul. Rosemont, Montréal, Canada H1T 2H1.
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Summary:

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The field potentials recorded simultaneously at various depth of the rabbit’s visual cortex and superior colliculus were analysed following light ON and light OFF. The collicular ON and OFF potentials exhibited three slow components superimposed by fast rhythmic oscillations. Only the first slow component reversed its polarity with penetration from surface negative to positive in depth. The cortical ON and OFF responses similarly contained three slow waves which all reversed their polarity with electrode penetration: from surface positive to negative in deeper layers. The most striking difference between ON and OFF cortical responses is the absence of fast rhythmic oscillations in the cortical ON response.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 2 , Issue 1 , February 1975 , pp. 61 - 66
Copyright
Copyright © Canadian Neurological Sciences Federation 1975

References

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