AJP - Regu AJP: Endocrinology and Metabolism
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Regul Integr Comp Physiol 275: R1690-R1702, 1998;
0363-6119/98 $5.00
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
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 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 Rashotte, M. E.
Right arrow Articles by Henderson, R. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rashotte, M. E.
Right arrow Articles by Henderson, R. P.
Vol. 275, Issue 5, R1690-R1702, November 1998

Vigilance states and body temperature during the circadian cycle in fed and fasted pigeons (Columba livia)

Michael E. Rashotte1, Iuri F. Pastukhov2, Eugene L. Poliakov2, and Ross P. Henderson1

1 Program in Neuroscience, Department of Psychology, Florida State University, Tallahassee, Florida 32306-1270; and 2 Sechenov Institute of Evolutionary Physiology and Biochemistry, St. Petersburg 194223 Russia

Fasting induces nocturnal hypothermia in pigeons. Slow-wave sleep (SWS) and paradoxical sleep (PS) are associated with reduced heat production in pigeons. The possibility that fasting-induced nocturnal hypothermia is related to increased SWS and PS was examined by comparing body temperature (Tb) and vigilance states when pigeons were fed and fasted. The results showed that when Tb is decreasing near the beginning of the dark phase, the percentage of total recording time (%TRT) spent in SWS and PS was elevated in fasting due to increased frequency of episodes and increased duration of PS episodes. When Tb was low during the middle segment of the dark phase, SWS was elevated in fasting due to increased episode duration. However, fasting did not alter PS, which increased in %TRT across the segment due to increased episode frequency. When Tb was rising during the final hours of dark, SWS remained elevated in fasting and %TRT in SWS and PS was relatively high. SWS and PS may promote the fasting pigeon's entry into, and maintenance of, nocturnal hypothermia.

sleep stages; nocturnal hypothermia; paradoxical sleep; slow-wave sleep; ad libitum feeding; fasting


This article has been cited by other articles:


Home page
 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
T. Yoda, L. I. Crawshaw, K. Yoshida, L. Su, T. Hosono, O. Shido, S. Sakurada, Y. Fukuda, and K. Kanosue
Effects of food deprivation on daily changes in body temperature and behavioral thermoregulation in rats
Am J Physiol Regulatory Integrative Comp Physiol, January 1, 2000; 278(1): R134 - R139.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
M. E. Rashotte, S. Saarela, R. P. Henderson, and E. Hohtola
Shivering and digestion-related thermogenesis in pigeons during dark phase
Am J Physiol Regulatory Integrative Comp Physiol, December 1, 1999; 277(6): R1579 - R1587.
[Abstract] [Full Text] [PDF]


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