عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
NATIONAL BIBLIOGRAPHY NUMBER
Number
TLpq304415702
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
انگلیسی
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
Scheduled activity reorganizes circadian phase in hamsters under full and skeleton photoperiods
General Material Designation
[Thesis]
First Statement of Responsibility
S. V. Sinclair
Subsequent Statement of Responsibility
R. Mistlberger
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Simon Fraser University (Canada)
Date of Publication, Distribution, etc.
1997
PHYSICAL DESCRIPTION
Specific Material Designation and Extent of Item
84
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
M.A.
Body granting the degree
Simon Fraser University (Canada)
Text preceding or following the note
1997
SUMMARY OR ABSTRACT
Text of Note
Circadian rhythms in rodents can be phase shifted by activity bouts or light pulses. Syrian hamsters were entrained to a 14:10 full photoperiod (FPP) and were induced to run in the middle of their subjective day. Four of 11 hamsters showed high levels of induced wheel running and phase delays of nocturnal activity onset. A skeleton photoperiod (SPP, two 30 minute light pulses) was used to better simulate natural dawn and dusk light exposure patterns, and to facilitate observation of transients indicative of possible oscillator decoupling. Adult male Syrian hamsters were entrained to a 14:10 LD SPP. Exercise was scheduled at one of 5 phases of the SPP. Some of the animals exercised in the middle of their inactive period showed 180 inversion of activity rhythms. Animals that did not invert showed small phase advances. Hamsters run late in the subjective day to early in the subjective night exhibited a mix of advances and delays. Exercise near the end of the active period caused large phase delays of entrained rhythms. Exercise at other phases late in the activity period had minimal effects. (Abstract shortened by UMI.)
TOPICAL NAME USED AS SUBJECT
Anatomy & physiology
Animals
Behaviorial sciences
Biological sciences
Physiological psychology
Psychology
PERSONAL NAME - PRIMARY RESPONSIBILITY
R. Mistlberger
S. V. Sinclair
ELECTRONIC LOCATION AND ACCESS
Electronic name
مطالعه متن کتاب p
[Thesis]
276903
a
Y
