Cognitive Neuroscience Department, Institute of Cognitive Sciences Studies, Tehran, Iran
Health Management Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
Serotonin is one of the most important Neurotransmitter and made up of aminoacids. Including L-tryptophan, only the L-isomer is used in protein synthesis and can pass across the blood-brain. Serotonin concentration in organisms is among the lowest of all amino acids and it has relatively low tissue. In this paper a brief review has done pertaining to history of serotonin, and potential cognitive aspects including CNS and PNS modulation of serotonin. Major focus of paper is to review subtypes of serotonin receptors. It’s gathered up-to-date information about other pharmacologic agents such as agonist and antagonist of serotonin.