[Complex estimation of the psychotropic activity spectrum of pineal hormone melatonin in young healthy humans].

Effects of the pineal hormone melatonin (melaxen, 1.5 mg, 2 weeks) on a complex of psychophysiological indices have been studied on a group of healthy human volunteers in comparison to placebo. The drug improved the concentration of attention, improved its stability in the presence of visual hindrances, and increased the critical frequency of merging light flashes. The administration of melatonin also significantly increased the transient memory volume and reduced the levels of depression and anxiety. Shifts in the psychoemotional state were more pronounced than changes in the cognitive functions.