COMPLETE SUPRACHIASMATIC LESIONS ELIMINATE CIRCADIAN RHYTHMICITY OF BODY-TEMPERATURE AND LOCOMOTOR-ACTIVITY IN GOLDEN-HAMSTERS

被引：64

作者：

REFINETTI, R

KAUFMAN, CM

MENAKER, M

机构：

[1] UNIV VIRGINIA,NATL SCI FDN,CTR BIOL TIMING,CHARLOTTESVILLE,VA 22903

[2] UNIV VIRGINIA,DEPT BIOL,CHARLOTTESVILLE,VA 22903

来源：

JOURNAL OF COMPARATIVE PHYSIOLOGY A-SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY | 1994年 / 175卷 / 02期

关键词：

SUPRACHIASMATIC NUCLEUS; CIRCADIAN RHYTHMS; BODY TEMPERATURE; LOCOMOTOR ACTIVITY; SYRIAN HAMSTER;

D O I：

10.1007/BF00215118

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

The effects of suprachiasmatic and control lesions on the circadian rhythms of locomotor activity and body temperature were studied in golden hamsters (Mesocricetus auratus) maintained in constant light as well as constant darkness. Large suprachiasmatic lesions, but not control lesions, eliminated circadian rhythmicity in locomotor activity as well as in body temperature. Analysis of the ''robustness'' of the rhythms of locomotor activity and body temperature in unlesioned and lesioned animals suggests that, because body temperature rhythmicity is more robust than locomotor rhythmicity, lesions that spare a small number of suprachiasmatic cells might abolish the latter but not the former. Our results do not support the hypothesis that the body temperature rhythm is controlled by a circadian pacemaker distinct from the main pacemaker located in the suprachiasmatic nuclei.

引用

页码：223 / 232

页数：10

共 29 条

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