Central Brain Function AND Psychology.

Brain is the central regulator of physiological function of humans. It is acknowledged that chemical substances synthesized from the brain cells pursue specific physiological activities. Human psychology is a complicated phenomenon, which is regulated by the central brain function. There are some specific chemical substances produced by the brain cells, relating with the psychological status of human. It has already been studied that neuropsychological disorders such as schizophrenia, bipolar disorders (depression like disorder) etc. are linked with abnormal synthesis of certain chemical substance in the brain. Recently, functional imaging technique, positron emission tomography is useful to investigate psychological status of humans.