Year: 2009
Type: article
Abstract: The 24-hour (h) light-dark (LD) cycle is a fundamental characteristic of Earth's environment and so its powerful influence on the behaviour and physiology of animals and humans that evolved on this planet is not surprising.In addition to influencing the perception of visual images, light coordinates the temporal rhythms of physiology and behaviour by sending signals to structures in the brain that contain the central circadian clock.These signals are mediated in part by melanopsin, a photopigment found in the retina.Light affects the brain through these nonvisual pathways, and scientists have recently begun to realize just how pervasive these nonvisual effects are.Mounting evidence supports the view that the effects of light on sleep and brain activity during wakefulness, as well as the duration of sleep and the homeostatic response to sleep loss, depend on both melanopsin and circadian time.
Source: PLoS Biology
Authors: Derk-Jan Dijk, Simon N. Archer
Institution: University of Surrey
Language: English
Subfield: Endocrine and Autonomic Systems
Field: Neuroscience
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $5,500
OpenAlex ID: W2060660675