CONCENTRATED STATE EVALUATION SYSTEM, CONCENTRATED STATE EVALUATION METHOD AND CONCENTRATED STATE EVALUATION PROGRAM

• Main Authors: UEHARA KENSUKE, MIYAGO KENTARO, SAITO TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 17.09.2020
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To provide a concentrated state evaluation system or the like capable of accurately determining whether or not a subject is in a concentrated state, and determining a quality of a concentrated state of the subject in the time of task.SOLUTION: The concentrated state evaluation system is comprised of : a brain wave signal acquisition unit 3; a brain wave signal transmission unit 4; and a processing terminal 5 and a monitor 6 analyzing the brain wave signal and displaying information related to a concentrated state of a subject P. The processing terminal 5 includes : a band pass filter 51 extracting time-series data of 4-30 Hz band; parameter calculation means 52 calculating parameters A, B, C and D0 of a modified Duffing oscillator on the basis of time-series data for 10 seconds; Mahalanobis distance calculation means 53 obtaining a Mahalanobis distance of parameters B, C calculated for every one second; Mahalanobis distance determination means 54; and notification signal transmission means 55 outputting a notification signal on the basis of a distance determination result.SELECTED DRAWING: Figure 2 【課題】被験者が集中状態にあるか否かを的確に判別でき、また、タスク時における被験者の集中状態の質について判別できる集中状態評価システム等を提供すること。【解決手段】脳波信号取得部３、脳波信号送信部４、脳波信号を解析処理して被験者Ｐの集中状態に関する情報を表示する処理端末５及びモニタ６からなり、処理端末５は、４〜３０Ｈｚ帯域の時系列データを抽出するバンドパスフィルタ５１と、１０秒間の時系列データから修正Duffing振動子のパラメータＡ、Ｂ、Ｃ及びＤ0を算出するパラメータ算出手段５２と、１秒毎に算出されたパラメータＢ及びＣのマハラノビス距離を求めるマハラノビス距離演算手段５３と、マハラノビス距離判定手段５４と、距離判定結果に基づいて報知信号を出力する報知信号送信手段５５を有している。【選択図】図２