Abstract
This paper evaluates some correlations between psychosomatic states and human activities such as (1) a frequency and an elapsed time of an opening/closing actions of clamshell formed mobile phones, and (2) a duration of sleeping time. A practical experiment is performed to collect some records of mobile phone activities and sleeping time of 24 subjects for about two months. In addition, a psychological test, Cornell Medical Index (CMI), is carried out to quantify psychosomatic states of these subjects. The result shows the elapsed time follows a distribution which is composed of two power-law functions. The time regions of the functions are different, one is short time region and the other is long time. It also reveals that the human activities have correlation with the psychosomatic state, in particular, there are some correlations among the indices of the power-law functions of the mobile phone activity, the sleeping time bythe self-report and the score of the psychological tests for each subject.
