FREQUENCY DETECTION DEVICE, FREQUENCY DETECTION METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To provide a brain-wave frequency detection device capable of highly accurately acquiring an output of BCI (Brain Computer Interface) using SSVEP (Steady-State Visual Evoked Potential) without any need of learning.SOLUTION: The brain-wave frequency detection device includes: a brain wave measurement part that measures a brain wave emitted from a primary visual cortex; a cycle data segmentation part that segments, for each of a plurality of prescribed cycles, cycle data from the brain wave, with each time of the prescribed cycle defined as a start time; an arithmetic average calculation part that adds the cycle data for each prescribed cycle; and an additive-method frequency detection part that detects, in the prescribed cycle, a frequency corresponding to a cycle where a difference between positive/negative peak intensities of data obtained by adding the cycle data for each prescribed cycle is maximized. 【課題】脳波の周波数検出装置が、学習を必要とせずに、ＳＳＶＥＰを用いたＢＣＩの出力をより精度よく得られるようにする。【解決手段】脳波の周波数検出装置が、第一次視覚野から発せられる脳波を測定する脳波測定部と、複数の所定周期の各々について、前記脳波から、当該所定周期の各時刻を開始時刻とする周期データを切り出す周期データ切出部と、前記所定周期毎に前記周期データを足し合わせる加算平均算出部と、前記所定周期のうち、当該所定周期毎に前記周期データを足し合わせたデータの正負ピーク強度の差が最大となる周期に対応する周波数を検出する加算法周波数検出部と、を具備する。【選択図】図１５