The relation between light-induced discharge in the suprachiasmatic nucleus and phase shifts of hamster circadian rhythms
Brain ResearchPublished 1 December 1992
Johanna H. Meijer, Benjamin Rusak, Gabriëlla Gänshirt
Citations81
SJR quartileQ2
SJR score0.85
SNIP0.72
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TL;DR
The data indicate that the magnitude of phase shifts is monotonically, but not linearly, related to photically induced changes in discharge rate.
Abstract
The role of neurophysiological activation of suprachiasmatic nucleus (SCN) cells in phase shifting the circadian pacemaker of the hamster was investigated in a combined behavioural and electrophysiological study. An electrophysiological study examined the relation between the pattern of light presentation and the induced discharge rate in the SCN. Behavioural experiments examined the relation between the pattern of light presentation and the magnitude of phase shift induced. The combination of these results provides an indirect assay of the relations between induced neural discharge in the SCN and phase shifts of the circadian activity rhythm. The data indicate that the magnitude of phase shifts is monotonically, but not linearly, related to photically induced changes in discharge rate.
Keywords
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