The evaluation of the individual is carried out more accurately than the conventional method.A biological signal processing apparatus (10) is a data acquisition section (11) for acquiring data of two biological signals measured simultaneously from one subject (H) and a phase difference that generates a difference in the phase component of the above described biosignal from the two data A fractional portion (13) is provided, and a fractal analysis unit (14) for performing a fractal analysis for the difference and calculating a predetermined index value is provided.Diagram【課題】従来よりも正確に個体の評価を行う。【解決手段】生体信号処理装置(10)は、1つの被験者(H)から同時に測定された2つの生体信号のデータを取得するデータ取得部(11)と、上記2つのデータから上記生体信号の位相成分の差分を生成する位相差分生成部(13)と、上記差分に対してフラクタル解析を行い所定の指標値を算出するフラクタル解析部(14)と、を備える。【選択図】図1
