PROBLEM TO BE SOLVED: To provide a mental condition measuring method, a device, and a program for indicating one-dimensionally whether a person is in a state of tension or relaxation in an understandable way.SOLUTION: Index value computing means 30, which has received information representing a low-frequency component value (LF) of a fluctuation in the beat interval caused by the activities of the sympathetic and parasympathetic nerves and information representing a high-frequency component value (HF) from a nerve activity value calculating means 26, performs the computing of the computing equation consisting of three terms of the first term Ga(LF/HF), the second term Gb(HF) dependent on the high-frequency component value (HF) depending on the ratio (LF/HF) with low-frequency component value (LF) and the high-frequency component value (HF) and a constant term (C). With this, an index value (S) one-dimensionally indicating the mental condition from the state of tension to the state of relaxation of the subject is computed by using the computing equation and displayed on a display (32).COPYRIGHT: (C)2008,JPO&INPIT【課題】人が緊張状態にあるか、リラックス状態に有るかを、一次元的にわかり易く示すことができる精神状態測定方法および装置並びにプログラムを提供する。【解決手段】交感神経と副交感神経の活動に起因して生じる拍動間隔のゆらぎの低周波成分値(LF)を示す情報と高周波成分値(HF)を示す情報とを神経活動値算出手段26から受けた指標値算出手段30が、低周波成分値(LF)と高周波成分値(HF)との比(LF/HF)に依存した第1項Ga(LF/HF)、高周波成分値(HF)に依存した第2項Gb(HF)、及び定数項Cの3つの項からなる演算式の演算を実行することにより、被験者の緊張状態からリラックス状態までの精神状態を一次元的に表す指標値(S)を前記演算式により算出し、表示器32に表示する。【選択図】図1
