生体信号に連動する吹き出しオンラインチャットの設計と評価

抄録

This paper proposes an online chat system using speech balloons changed by user's biomedical signals. The system displays text of chat conversations in speech balloons which express user's emotion like a comic. The figure of a balloon that expresses arousal changes simultaneously with skin conductance (SC) on user's foot, and the color of a balloon that expresses emotional valence changes simultaneously with electromyogram (EMG) on user's forehead and cheek. Therefore, a user can input his/her emotion without superfluous operation. The system solves a problem of previous systems. The previous systems impose not only operations to input messages but also operative burdens to input emotions on users. The users, therefore, cannot keep a rhythm of conversation of a chat because of the superfluous operations to input emotion. We conducted an experiment to compare our system with a not-changing-balloon chat system without emotion. The results show that the operability of our system did not decrease in despite of the operation to input emotion because all users need to do is to smile or to bend his/her brows to input emotion while inputting a message. Also, the results show that our system is easy-to-understand emotions of a speech partner and is very pleasant.