Entrainment of the circadian activity rhythm to the light cycle: Effective light intensity for a Zeitgeber in the retinal degenerate C3H mouse and the normal C57BL mouse

doi:10.1016/0031-9384(80)90246-2

Physiology & Behavior

Volume 24, Issue 3, March 1980, Pages 523-527

https://doi.org/10.1016/0031-9384(80)90246-2 Get rights and content

Abstract

Effective light intensities for entrainment of activity rhythms were obtained in the retinal degenerated C3Hf/He mice and the normal C57BL/6J mice. The circadian activity rhythms of the mice were examined under LD 12:12 cycles with one of five different levels of light (L phase) and complete darkness (D phase). The thresholds of a Zeitgeber, defined as the light intensity effective for 50% entrainment, were estimated between 1 lux and 5 lux in the C3H and lower than 0.01 lux in the C57BL mice. These results suggest that at least two different kinds of photoreceptor including rods and cones participate in the photic entrainment of the circadian activity rhythms.

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^☆: This work was supported by a grant-in-aid (No. 210704) for the scientific research from the Ministry of Education, Science and Culture of Japan.

²: Present address: Laboratory of Physiological Psychology, Mitsubishi-Kasei Institute of Life Sciences, Machida-shi, Tokyo 194, Japan.

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Entrainment of the circadian activity rhythm to the light cycle: Effective light intensity for a Zeitgeber in the retinal degenerate C3H mouse and the normal C57BL mouse☆

Abstract

Expl Neurol.

Expl Neurol.

Brain Res.

Brain Res.

Photochem. Photobiol.

Brain Res.

Brain. Res.

Brain Res.

Behav. Biol.

The role of the eye and of the hypothalamus in the photo-stimulation of gonads in the duck

Ann. N.Y. Acad. Sci.

Photoreceptor degeneration and synaptogenesis in retinal-degenerative (rd) mice

J. comp. Neurol.

Sensibilité visuelle spectrale chez des souris à rétine entièrement dépourvue de cellules visuelles photo-réceptrices

Comp. r. Soc. Biol.

Genetic aspects of learning and memory in mice

Science

Spaltlampenmikroskopie und Ophthalmoskopie am Auge von Ratte und Maus

Document. Ophthalmol.

Control of the rat pineal gland by light spectra

Differential effect of the rd mutation on rods and cones in the mouse retina

Invest. Ophthalmol. Visual. Sci.

Cone inputs to ganglion cells in hereditary retinal degeneration

Science

Studies of visual function and its decay in mice with hereditary retinal degeneration

J. comp. Neurol.

Diurnal variation in plasma corticosterone following long-term exposure to continuous illumination

Endocrinology

The importance of differences in morphology in inbred strains

J. nat. Cancer Inst.

Strain differences in the mouse's wheel-running behavior

Jap. Psychol. Res.

Neural, sensory, and motor functions