| 摘要 |
PROBLEM TO BE SOLVED: To provide a device which makes a correct neurological diagnosis of dementia or the like possible by determining the activity of a subject's brain as an objective value in his daily life. SOLUTION: A brain wave signal is analyzed into an alpha wave signal and a beta wave signal and information for judging the activity of the subject's brain is obtained by calculating the ratio of an integral value of the beta wave signal to that of the alpha wave signal. The other way of obtaining the information is by finding a required sampling number of the integral values of the mixed brain wave signals and those of the alpha wave signals and the beta wave signals, finding the ratio α% of the occurrence of the integral values of the alpha wave signals to the integral values of the mixed brain wave signals and the ratio β% of the occurrence of the integral values of the beta wave signals to the integral values of the mixed brain wave signals, and calculating the ratio of β% to α%. With the information added to diagnosis by interviewing the subject, a correct diagnosis of metal disease is made. An accurate measuring is possible because the device can be made small and mobile and the subject can use the device in his daily life without being nervous. |
