The analysis of existing systems and methods to assess psychoemotional state of a person was carried out. Subjective and objective methods, tests of Luncher, Tsung, Spielberg-Hanin, Hamilton scale are considered in the paper. The considered methods are analyzed in terms of its effectiveness and information content. It was concluded that nanoelectrodes enable the possibility to expand the possibilities of methods significantly due to advances in nanotechnology through sharing the subjective and objective methods
