EVALUATION DEVICE AND EVALUATION METHOD

• Main Authors: SEKINE TAKAYASU, HATANO FUMI, NITTONO HIROSHI, TANAKA TAKANOBU, HERAI TOMOMITSU
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2016
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

PROBLEM TO BE SOLVED: To provide an evaluation device that evaluates an object using an electroencephalogram acquired from a subject.SOLUTION: An evaluation device includes: an electroencephalogram acquisition part 11 for acquiring electroencephalogram signals of a plurality of subjects, each being acquired from each of the subjects; an intensity data generation part for generating intensity data, based on the electroencephalogram signals, representing an intensity of a signal component in a predetermined frequency band or representing a relationship between intensities of signal components in a plurality of frequency bands in time series; a correlation data generation part for generating correlation data representing in time series cross-correlation coefficients that are found by calculating a cross-correlation coefficient between pieces of intensity data at respective times between the plurality of subjects; and an output part for outputting evaluation data representing a degree of synchronization of electroencephalogram variation between the plurality of subjects based on the correlation data.SELECTED DRAWING: Figure 1 【課題】被検者から取得した脳波を用いて、対象物に対する評価を行う評価装置を提供する。【解決手段】複数の被検者からそれぞれ取得した、被検者の脳波信号を取得する脳波取得部１１と、脳波信号に基づいて、所定の周波数帯の信号成分の強度、または、複数の周波数帯における信号成分の強度間の関係を時系列で表した強度データを生成する強度データ生成部と、複数の被検者間における、強度データ同士の、各時刻における相互相関係数を算出し、相互相関係数を時系列で表した相関データを生成する相関データ生成部と、相関データに基づいて、複数の被検者における脳波変動の同期度を表した評価データを出力する出力部と、を有することを特徴とする。【選択図】図１