PROBLEM TO BE SOLVED: To provide a brain disease diagnosis apparatus, etc. capable of reducing a physical burden and determining a brain disease inexpensively and easily when a brain wave is used.SOLUTION: A brain disease diagnosis device 1 includes a synchronism calculation part 35 for calculating a synchronous index value based on the synchronism of signals from two mutually different regions of the head received at an electroencephalograph 12, a complexity calculation part 36 for calculating a complexity index value based on the complexity of signals on any one of the regions of the head received at the electroencephalograph 12, and an information generation part 37 for generating the information that can specify whether or not a coordinate position based on the calculated synchronous index value and the calculated complexity index value on a two-dimensional plane with the synchronous index value being one axis and the complexity index value being the other axis is present in one region on the two-dimensional plane divided into two by one predetermined straight line on the two-dimensional plane.SELECTED DRAWING: Figure 1【課題】身体的負担を軽減でき、更に、脳波を用いた場合には安価かつ簡便に脳疾患を判断できる脳疾患診断装置等を提供すること。【解決手段】脳疾患診断装置１が、脳波計１２から受けた頭部の互いに異なる２つの部位からの信号の同期性に基づく同期性指標値を算出する同期性算出部３５と、脳波計１２から受けた頭部のいずれかの部位に関する信号の複雑性に基づく複雑性指標値を算出する複雑性算出部３６と、同期性指標値を一方の軸とし複雑性指標値を他方の軸とする２次元平面上での、算出された同期性指標値及び算出された複雑性指標値に基づく座標位置が、２次元平面上の予め定められた１つの直線によって２つに分断された２次元平面上の一方領域に存在しているか否かを特定可能な情報を生成する情報生成部３７と、を備えるようにする。【選択図】図１
