心理的気分状態評価の違いによるVR環境における脳波活動と体表面知覚電流感度の評価

抄録

We evaluated the impact of different mood states on electroencephalogram (EEG) activity and surface sensation electrical current values using surface sensory nerve electrical stimulation in a virtual reality (VR) environment. The participants were 22 adults. The Profile of Mood States (POMS) was used as a psychological test to calculate the Total Mood Disturbance (TMD) score to divide participants into a high TMD group and a low TMD group. Three videos were selected for each of three different conditions (resting, unpleasant, pleasant) for a total of nine videos. Pain Vision was used to calculate the pain ratio (PR) to evaluate surface sensory nerve electrical stimulation. A subjective pain questionnaire was used to calculate the pain subjective score (PS) to assess participants’ subjective evaluations of pain. The θ wave rate (θ%), α wave rate (α%), and β wave rate (β%) were calculated for the EEG. Analysis results demonstrated that when mood was positive, PS was lower for all VR videos, but when mood was negative, PR, PS, and α% were lower and β% was higher for unpleasant and pleasant videos. Our study findings suggest that pain may be mitigated subjectively when mood is positive, and when mood is negative, it may be mitigated both subjectively and objectively as demonstrated by electrical stimulation.