2019 Volume 31 Issue 5 Pages 859-865
As one of the methods for continuous and smooth communication between people, it is effective that suggestion of a topic by the conversation support system in an appropriate condition. This system observes constantly users’ condition in conversation and decide whether suggest topics or not. In this study, we conducted a conversation experiment aimed to gain a new sight for suggestion of a topic toward development of a conversation support system. Moreover, to objectively measure the condition of active conversation and lapse in conversation user-by-user, we analyzed the LF/HF, that is the balance value of sympathetic nerve and parasympathetic nerve, calculated from heart rate variability in conversation.