Mental time of conversations with photos using speech, event and photographing time

抄録

In order to prevent declining cognitive functions, coimagination method is developed. This method is to train the episodic memory function of participants by carrying out group conversation based on photos, with designated time limit and theme. We study the mental time of participants in order to determine the memory function utilized by participants during conversation. Mental time is a time consciousness of human over past, present and future. And with the purpose of training the recent episodic memory function, mental time travelling to the “Past” for a long time is undesirable. In this study, we propose the method to classify mental time into “Past”, “Present” and “Future” by using three temporal elements which are speech, event and photographing time. Speech time is the time of coimagination method was carried out or the talking time, while event time is the time related to the contents of utterances and photographing time is the time of photo was taken. The relation of these three temporal information is connected with “before”, “after” and “at the same time”. By using the relation of three temporal elements, we classify the mental time of participants and plot the graph of mental time travelling.