Send to:

Choose Destination
See comment in PubMed Commons below
J Neuroendocrinol. 2004 Feb;16(2):179-80.

Seeing the a new way.

Author information

  • 1Department of Visual Neuroscience, Imperial College Faculty of Medicine, London, UK.


Research over the past decade has shown that the rods and cones are not the only photoreceptors of the eye. There also exists a population of directly light sensitive ganglion cells that act as brightness detectors and regulate a wide variety of different photosensory tasks, including the regulation of 24-h circadian clocks, synthesis of the hormone melatonin, pupil size and behaviour. These receptors may even help modulate our mood and sense of well-being.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk