PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -Exposure to artificial light can disrupt your circadian rhythm, especially blue light, which can block the production of melatonin, the “sleep” hormone.

Detailed explanation-2: -GABAergic neurons in the ventrolateral preoptic area and median preoptic nucleus promote sleep by inhibiting wake-promoting neurons in the caudal hypothalamus and brainstem. The basal forebrain also contains sleep-active neurons that may promote sleep via projections within the BF and direct projections to the cortex.

Detailed explanation-3: -Melanopsin is a short-wavelength-sensitive pigment with a peak spectral sensitivity near around 480 nm [4], rendering some RGCs intrinsically photosensitive [79]. These intrinsically photosensitive retinal ganglion cells (ipRGCs) are thought to mediate most effects of light on the circadian clock.

Detailed explanation-4: -Melatonin is regulated not only by that circadian oscillator but acts as a darkness signal, providing feedback to the oscillator. Melatonin has both a soporific effect and an ability to entrain the sleep-wake rhythm. It also has a major role in regulating the body temperature rhythm.