Abstract
Recently, many researches on brain science have been reported. However, brain function related to decision-making have not been well-known. The purpose of this study is to reveal the brain function related to decision-making by EEG. We analyze EEG data by time-frequency analysis called ERD / ERS.
In this paper, we investigate EEG during the period of preparation to exercise press-button movements. We perform two tasks over 6 subjects. One task called the No-Go-Cue experiment. Subjects press a button when Direction-Cue is shown. The other task called the Go-Cue experiment. Subjects are shown Direction-Cue in monitor and prepare movements until Go-Cue is presented. Subjects press a button when Go-Cue is sounded. Direction-Cue is shown the direction of press-button by right or left arrow. Go-Cue by beep sound is shown timing to start press-button movements. We forcus on power of alpha band (8-12Hz). As results, two features were observed. 1) ERS occur when Direction-Cue showed. 2) ERD have occurred in the term between Direction-Cue and Go-Cue. First feature is estimated a response of direction-making related to movements. Second feature is estimated a response of movement planning.
