Examlex
The Internet, though very effective in disseminating information to specific target groups, costs much more when compared to other media.
Alpha Wave
A type of brainwave detected by an EEG that occurs when a person is relaxed, but alert, typically with closed eyes.
Sleep-Inducing Hormone
Melatonin, a hormone produced by the pineal gland that regulates sleep and wakefulness.
Melatonin
A chemical substance secreted by the pineal gland in reaction to lack of light, which controls the rhythm of sleeping and waking.
Serotonin
A neurotransmitter in the brain that plays key roles in stabilizing mood, feelings of well-being, and happiness.
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