AJP - Regu Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Regul Integr Comp Physiol 255: R1008-R1019, 1988;
0363-6119/88 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
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 Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Krilowicz, B. L.
Right arrow Articles by Heller, H. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Krilowicz, B. L.
Right arrow Articles by Heller, H. C.

AJP - Regulatory, Integrative and Comparative Physiology, Vol 255, Issue 6 1008-R1019, Copyright © 1988 by American Physiological Society

ARTICLES

Neuronal activity during sleep and complete bouts of hibernation

B. L. Krilowicz, S. F. Glotzbach and H. C. Heller
Department of Biological Sciences, Stanford University, California 94305.

Changes in arousal state in a euthermic mammal exert powerful influences on major neural regulatory systems. Changes in behavioral state occur at body temperature (Tb) greater than 25 degrees C during hibernation. However, no information exists regarding alterations in arousal states during deep torpor. In this study we used a combination of electroencephalographic, electromyographic, and posterior thalamic neuronal activity in ground squirrels (Spermophilus lateralis) to evaluate arousal states during deep hibernation. No state homologous to rapid-eye-movement sleep was observed below Tb = 21 degrees C during hibernation. However, the animals did continue to cycle through states homologous to electrophysiologically defined wakefulness (AW) and non-rapid-eye-movement (NREM) sleep at all temperatures examined (Tb = 14-36 degrees C). These results extend previous observations that hibernation is not a homogeneous state. Instead, deep torpor consists primarily of a state similar to NREM sleep, interrupted periodically by short intervals of a form of AW. These periodic alterations in state should be accompanied by changes in the properties of many regulatory systems and must be accounted for in any theory of the neural control of hibernation.


This article has been cited by other articles:


Home page
 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
J. E. Larkin, P. Franken, and H. C. Heller
Loss of circadian organization of sleep and wakefulness during hibernation
Am J Physiol Regulatory Integrative Comp Physiol, April 1, 2002; 282(4): R1086 - R1095.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
B. F. O'Hara, F. L. Watson, H. K. Srere, H. Kumar, S. W. Wiler, S. K. Welch, L. Bitting, H. C. Heller, and T. S. Kilduff
Gene Expression in the Brain across the Hibernation Cycle
J. Neurosci., May 15, 1999; 19(10): 3781 - 3790.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
A. M. Strijkstra and S. Daan
Dissimilarity of slow-wave activity enhancement by torpor and sleep deprivation in a hibernator
Am J Physiol Regulatory Integrative Comp Physiol, October 1, 1998; 275(4): R1110 - R1117.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online