Title:
BRAIN STATE MONITORING METHOD
Document Type and Number:
Japanese Patent JP2022065256
Kind Code:
A
Abstract:
To provide a method capable of extracting a wave form of a brain wave including no noise, analyzing a frequency component more precisely, and monitoring a brain state more accurately.SOLUTION: A method is configured to repeat the steps of: decomposing brain wave data which is measured as reference data and monitoring data by empirical mode decomposition, into an inherent vibration mode; performing Fourier transform for calculating frequency strength data; calculating a difference between the frequency strength data of the monitoring data, and the frequency strength data of one reference data which is selected in a random state from pieces of frequency strength data of the plurality of pieces of reference data, the steps being repeated multiple times. If an average value of the difference is plus, a topography map is drawn on the basis of a value of the frequency strength of the monitoring data which is increased relative to the frequency strength of the reference data, and if the average value of the difference is minus, the topography map is drawn on the basis of the value of the frequency strength of the monitoring data which is decreased relative to the frequency strength of the reference data.SELECTED DRAWING: Figure 1
Inventors:
WATABE TAKAHIRO
Application Number:
JP2020173675A
Publication Date:
April 27, 2022
Filing Date:
October 15, 2020
Export Citation:
Assignee:
RAILWAY TECHNICAL RES INST
International Classes:
A61B5/372
Attorney, Agent or Firm:
Toshiaki Aoki
Kawai Makoto
Kawai Makoto
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