The pineal gland in the brain naturally produces the hormone melatonin. This hormone activates the MT1 and MT2 receptors (binding sites) to regulate circadian rhythms and help with sleep.

Among the many COVID-19 conspiracy theories, I recently came across one that's got an interesting neuroscience twist. The theory is that infrared thermometers — widely used to screen people for fever ...

McCord and Allen (1917) found that extracts of mammalian pineal glands contain a potent contracting agent of larval amphibian melanophores. Lerner and his co-workers determined the chemical structure ...