Patent ID: 8744563

Claim:
A mental disorder analysis apparatus, comprising: a storage unit that stores sleep electroencephalogram information that is information on electroencephalograms during sleep of a test subject; an analyzing unit that performs analysis regarding presence or absence of a mental disorder using the sleep electroencephalogram information stored in the storage unit; and an output unit that outputs a result of the analysis performed by the analyzing unit, wherein, as the analysis, the analyzing unit acquires information indicating an appearance status of any of α waves, δ waves and β waves contained in the sleep electroencephalogram information, and determines the presence or absence of a mental disorder according to the information, wherein the output unit outputs a result of determination regarding the presence or absence of a mental disorder performed by the analyzing unit, wherein the analyzing unit acquires information indicating either one of an appearance rate and a power of α waves contained in sleep electroencephalogram information in a non-REM sleep period, in the sleep electroencephalogram information, and determines the presence or absence of a mental disorder according to the information, and wherein the analyzing unit detects spindle waves in an α band in sleep electroencephalogram information in a non-REM sleep period, in the sleep electroencephalogram information, and determines that depression is present in a case where an appearance rate of the detected spindle waves exceeds a predetermined threshold value.