Strain-differentiated circadian and ultradian rhythms in locomotor activity of the laboratory rat
作者： D. B�ttner , F. Wollnik
DOI: 10.1007/BF01076410
关键词:
摘要: Spontaneous locomotor activity (LA) was recorded in five inbred strains of laboratory rats (ACI/Ztm, AS/Ztm, BH/Ztm, BS/Ztm, LEW/Ztm) under light-dark (LD 12∶12), continuous-dark (DD), and continuous-light (LL) conditions. Strain-dependent differences LA were observed each light condition. Under LD conditions, 24-h rhythms found the pattern strain studied. In addition, BH showed a clear bimodal, LEW trimodal, pattern. Spectral analysis patterns revealed distinct 4- 4.8-h ultradian 12-, 6-, 4.8-, 4-h strain. These strain-characteristic persisted therefore demonstrating their endogenous character. continuous-bright-light conditions circadian decreased to non-significant level AS BS strains. This not case, however, all animals Despite rapid decrease rhythm LL, significant rhythms.
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