Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Click here for more information

Sign In to gain access to subscriptions and/or personal tools.
Journal of Biological Rhythms
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Hofman, M. A.
Right arrow Articles by Swaab, D. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hofman, M. A.
Right arrow Articles by Swaab, D. F.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Diurnal and Seasonal Rhythms of Neuronal Activity in the Suprachiasmatic Nucleus of Humans

Michel A. Hofman

Netherlands Institute for Brain Research, Graduate School of Neurosciences, Amsterdam, The Netherlands

Dick F. Swaab

Netherlands Institute for Brain Research, Graduate School of Neurosciences, Amsterdam, The Netherlands

The mammalian suprachiasmatic nucleus (SCN) is considered to be a critical component of a neural system implicated in the temporal organization of a wide variety of biological processes. Since the environmental light-dark cycle is the main zeitgeber for many of these rhythms, photic information may have a synchronizing effect on the endogenous clock in the SCN by inducing periodic changes in the activity of certain groups of neurons. The present study was conducted to investigate whether the daily light-dark cycle as well as seasonal variations in photoperiod would affect the vasopressin cell population of the human SCN. To that end, the brains of 30 young human subjects (ranging in age from 6 to 47 years) were investigated.

Key Words: suprachiasmatic nucleus • human hypothalamus • vasopressin neurons • diurnal rhythm • seasonal rhythm • biological clock • photic entrainment

Journal of Biological Rhythms, Vol. 8, No. 4, 283-295 (1993)
DOI: 10.1177/074873049300800402
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:


Home page
 J Biol RhythmsHome page
W. J. Schwartz, H. O. de la Iglesia, P. Zlomanczuk, and H. Illnerova
Encoding Le Quattro Stagioni within the Mammalian Brain: Photoperiodic Orchestration through the Suprachiasmatic Nucleus
J Biol Rhythms, August 1, 2001; 16(4): 302 - 311.
[Abstract] [PDF]

Home page
 Arch Gen PsychiatryHome page
J.-N. Zhou, R. F. Riemersma, U. A. Unmehopa, W. J. G. Hoogendijk, J. J. van Heerikhuize, M. A. Hofman, and D. F. Swaab
Alterations in Arginine Vasopressin Neurons in the Suprachiasmatic Nucleus in Depression
Arch Gen Psychiatry, July 1, 2001; 58(7): 655 - 662.
[Abstract] [Full Text] [PDF]

Home page
 J Biol RhythmsHome page
T. Deboer, V. V. Vyazovskiy, and I. Tobler
Long Photoperiod Restores the 24-h Rhythm of Sleep and EEG Slow-Wave Activity in the Djungarian Hamster (Phodopus sungorus)
J Biol Rhythms, October 1, 2000; 15(5): 429 - 436.
[Abstract] [PDF]

Home page
 J Biol RhythmsHome page
M.-L. Laakso, T. Porkka-Heiskanen, A. Alila, D. Stenberg, and G. Johansson
Twenty-Four-Hour Rhythms in Relation to the Natural Photoperiod: A Field Study in Humans
J Biol Rhythms, December 1, 1994; 9(3-4): 283 - 293.
[Abstract] [PDF]