Melanopsin, a blue photoreceptor in retinal cells, receives blue light each morning and transmits the signal via the nerves of the eye to the SCN, the circadian rhythm central pacemaker. The photo ...

The brain is the most complex organ in the human body. Different parts of the brain perform a variety of functions, all of which are necessary for it to operate in one way or another. These functions ...

The molecular clock theory posits that genetic changes happen steadily and gradually, offering a reliable means for peering into the past and theorizing when complex life first emerged. However, there ...