PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -Your pineal gland releases the highest levels of melatonin when there’s darkness and decreases melatonin production when you’re exposed to light. In other words, you have low levels of melatonin in your blood during the daylight hours and peak levels of melatonin during the nighttime.

Detailed explanation-2: -The synthesis and release of melatonin are stimulated by darkness, melatonin is the “chemical expression of darkness” and inhibited by light [4]. Photic information from the retina is transmitted to the pineal gland through the suprachiasmatic nucleus of the hypothalamus (SCN) and the sympathetic nervous system [5].

Detailed explanation-3: -Melatonin is a hormone that is naturally made by the body, and its production is closely tied to light. In response to darkness, the pineal gland in the brain initiates production of melatonin.

Detailed explanation-4: -Exposure to light suppresses the secretion of melatonin, a hormone that influences circadian rhythms. Even dim light can interfere with a person’s circadian rhythm and melatonin secretion.

Detailed explanation-5: -The synthesis and release of melatonin from the pineal gland is heavily influenced by light stimulation of the retina, particularly through the intrinsically photosensitive retinal ganglion cells. Melatonin is also synthesised within the eye, although to a much lesser extent than in the pineal gland.