Near the center of our brain, tucked between the folds of an important brain structure called the thalamus, we have a small endocrine gland called the pineal gland. When light-sensitive cells in the eye's retina detect light, a signal is sent to a tiny region called the suprachiasmatic nucleus, which is important for synching our bodies with nature's 24-hour light/dark cycle.
Nerves from the suprachiasmatic nucleus then travel through several different tracts and eventually reach the pineal gland. At night time, when it's dark, the pineal gland is activated to produce a hormone called melatonin, which promotes feelings of sleepiness.
You can submit articles in our peer reviewed Journal at http://scitechnol.com/submitmanuscript.php
Journal of Spine & Neurosurgery is a peer-reviewed scholarly journal and aims to publish the most complete and reliable source of information on the discoveries and current developments in the mode of original articles, review articles, case reports, short communications, etc. in all areas of spine & neurosurgery and making them available online freely without any restrictions or any other subscriptions to researchers worldwide.