Indirect bright light improves circadian rest-activity rhythm disturbances in demented patients.

@article{Someren1997IndirectBL,
  title={Indirect bright light improves circadian rest-activity rhythm disturbances in demented patients.},
  author={Eus J W Van Someren and Amy L. Murphy Bruno Kessler and Majid Mirmiran and Dick F. Swaab},
  journal={Biological psychiatry},
  year={1997},
  volume={41 9},
  pages={955-63}
}
Light is known to be an important modulator of circadian rhythms. We tested the hypothesis than an enduring increase in the daytime environmental illumination level improves rest-activity rhythm disturbances in demented patients. Actigraphy was performed before, during, and after 4 weeks of increased illumination in the living rooms of 22 patients with dementia clinically diagnosed as probable Alzheimer's disease, multi-infarct dementia, dementia associated with alcoholism, or normal pressure… CONTINUE READING