Photic sensitivity of geniculate neurons that project to the suprachiasmatic nuclei or the contralateral geniculate

D X Zhang; B Rusak

doi:10.1016/0006-8993(89)91617-x

Photic sensitivity of geniculate neurons that project to the suprachiasmatic nuclei or the contralateral geniculate

Brain Res. 1989 Dec 11;504(1):161-4. doi: 10.1016/0006-8993(89)91617-x.

Authors

D X Zhang¹, B Rusak

Affiliation

¹ Department of Psychology, Dalhousie University, Halifax, Nova Scotia, Canada.

PMID: 2688831
DOI: 10.1016/0006-8993(89)91617-x

Abstract

We applied tests of antidromic activation to identify cells in the hamster intergeniculate leaflet (IGL) that project to either the suprachiasmatic nucleus (SCN) or the contralateral IGL. IGL cells projecting to these targets were tested for photic responses; most showed sustained activation, while a few were suppressed by retinal illumination. Stimulation of one IGL typically suppressed firing in contralateral IGL cells and inhibited responses to immediately succeeding photic stimulation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Action Potentials
Animals
Cricetinae
Geniculate Bodies / cytology
Geniculate Bodies / physiology*
Mesocricetus
Photic Stimulation
Suprachiasmatic Nucleus / cytology*
Visual Pathways / anatomy & histology
Visual Pathways / physiology*