著者

井深 信男

出版者

THE JAPANESE SOCIETY FOR ANIMAL PSYCHOLOGY

雑誌

動物心理学研究 (ISSN:09168419)

巻号頁・発行日

vol.47, no.2, pp.109-120, 1997-12-15 (Released:2009-10-13)

参考文献数

19

被引用文献数

1 1

著者

井深 信男

出版者

The Japanese Psychological Association

雑誌

心理学研究 (ISSN:00215236)

巻号頁・発行日

vol.56, no.5, pp.300-315, 1985

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Recent advances on the study of circadian rhythm are reviewed and discussed on the following topics: (1) its phylogeny (the existence of extraretinal photoreceptors, photoreceptors for entrainment, the location of circadian oscillators), (2) its ontogeny and aging, (3) its central neural mechanism (the ablation study of the suprachiasmatic nucleus (SCN), the electrophysiological study of the SCN in multiple unit activity and single neuron activity in rat hypothalamic slice preparation, the use of 2-DG as a functional marker, the transplantation of the SCN, the afferents and efferents of SCN and its peptides), (4) multiple oscillators theory (the anticipatory activities in rats with SCN lesions in response to the restricted feeding schedule, internal desynchronization, splitting), and (5) its psychological significance. Many lines of evidence have shown that the SCN is a putative circadian pacemaker in mammals. On the other hand, other lines of evidence suggest that there are other oscillators outside the SCN. Finally it is emphasized that the chronobiological viewpoint is necessary for the development of psychology.

著者

加藤 知歩 井深 信男

出版者

日本動物心理学会

雑誌

動物心理学研究 (ISSN:09168419)

巻号頁・発行日

vol.52, no.2, pp.67-71, 2002 (Released:2008-02-06)

参考文献数

17

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The present experiment was performed to investigate the interactive effects of different prior photoperiods and stress on testicular weight in Syrian hamsters under the neutral photoperiod. Seasonality was experimentally manipulated by the change of photoperiod. One group was exposed to LD 12.5 : 11.5 for 12 weeks following 8-week long photoperiod (LP)exposure. The other group was exposed to the same neutral photoperiod for 12 weeks after 8-week short photoperiod(SP). Stress was produced by food deprivation of fixed days or random days throughout the 12 weeks of the neutral photoperiod. The results clearly showed that unpredictable food deprivation on 25% days throughout the 12-week testing period induced more detrimental effects on testes than predictable deprivation once every 4 days in the LP group. Stress tolerance associated with food deprivation was weaker for the animals transferred from LP than for the ones transferred from SP. This finding suggests that stress tolerance varies with season.

著者

井深 信男

出版者

The Japanese Psychological Association

雑誌

Japanese Psychological Research (ISSN:00215368)

巻号頁・発行日

vol.34, no.4, pp.126-134, 1993-03-25 (Released:2009-02-24)

参考文献数

21

被引用文献数

2 1

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The effects of prior photoperiodic history on body growth were investigated in male Syrian hamsters in a series of experiments. In Exp. 1 the animals (L-S) housed in a short photoperiod (LD 8: 16, S) after exposure to a long photoperiod (LD 16: 8, L) gained body weight more than those in S-S, and the animals (S-L) housed in L after exposure to S weighed less than those in L-L. In Exp. 2 animals were first exposed to 1) L, 2) S, 3) continuous light (LL), or 4) S+30 min light pulse (P2), and then all animals were transferred to, and maintained in an intermediate photoperiod (LD 13: 11). Animals coming from L and LL showed larger weight gain, and those coming from S the smallest rate of growth. Animals in P2 showed a moderate rate of growth. Exp. 3 demonstrated that the effect of prior photoperiodic history also varied, depending on the different phases of light-dark (LD) cycles to which animals had been exposed. Our studies showed that the increase in body weight in Syrian hamsters was largely influenced by their prior photoperiodic history rather than by the absolute length of photoperiod.

著者

井深 信男

出版者

日本動物心理学会

雑誌

動物心理学研究 (ISSN:09168419)

巻号頁・発行日

vol.47, no.2, pp.109-120, 1997-12-15

被引用文献数

1 1