Scientists Find Eye Pigment Controls Circadian Rhythm

– A brief report on an eye pigment, cryptochrome, which appears to control mammals’ circadian rhythms.

Mental Health Net – Circadian Rhythm Sleep Disorder Symptoms

– General symptoms of circadian rhythm sleep disorder.

Light Sets the Molecular Controls of Circadian Rhythm

– Work conducted at the Rockefeller University indicates that light can reset the biological clock.

Circadian Sleep Disorders Association

– Support and providing information to those affected by circadian sleep disorders such as Delayed Sleep Phase Syndrome. Includes links, FAQs, message board and a mailing list.

American Association of Medical Chronobiology and Chronotherapeutics

– Provides an organizational framework for medical scientists, including academic and practicing physicians, interested in chronobiological phenomena.

Society for Light Treatment and Biological Rhythms

– A not-for-profit international organization founded in 1988 which aims to foster research, professional development and clinical applications in the fields of light therapy and biological rhythms.

The Brain, Circadian Rhythms, and Clock Genes

– British Medical Journal Article on circadian rhythms (1998). A clinical review.
(December 19, 1998)