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Title:
ELECTROENCEPHALOGRAM ANALYSIS APPARATUS, ELECTROENCEPHALOGRAM ANALYSIS SYSTEM, AND ELECTROENCEPHALOGRAM ANALYSIS PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/080354
Kind Code:
A1
Abstract:
This electroencephalogram analysis apparatus (30) comprises: a calculation unit (301) which calculates, from a spectrum obtained by a frequency analysis of time-series electroencephalographic data measured at a predetermined site on the subject's head, a first ratio which is the ratio of a feature amount of the intensity of waves which are within a higher frequency band in a first frequency band than waves within the first frequency band which generate under stress to a feature amount of the intensity of the waves in the first frequency band which generate under stress or the ratio of a feature amount of the intensity of waves within the first frequency band to a feature amount of the intensity of waves within a second frequency band which generate in an awakening state, and a second ratio which is the ratio of a feature amount of the intensity of waves within a third frequency band which generate in a sleeping state to the feature amount of the intensity of the waves within the second frequency band which generate in the awakening state; and an inference unit (302) for inferring the state of the subject on the basis of the first ratio, a first reference value determined from the first ratio, the second ratio, and a second reference value determined from the second ratio.

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Inventors:
HOSAKA TOSHIHIRO (JP)
SATO HIROSHI (JP)
TAMURA MAKOTO (JP)
SAITO RYUTA (JP)
Application Number:
PCT/JP2019/040463
Publication Date:
April 23, 2020
Filing Date:
October 15, 2019
Export Citation:
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Assignee:
MITSUBISHI TANABE PHARMA CORP (JP)
International Classes:
A61B5/0476; A61B5/0484; A61B5/16
Foreign References:
JP2002000577A2002-01-08
JPH0341405U1991-04-19
JP2018057510A2018-04-12
JPH02193645A1990-07-31
JPH06296596A1994-10-25
JP2017192425A2017-10-26
Other References:
HIRAI, FUMIYASU; YOSHIDA, KOUJI; MIYAJI, ISAO: "Trial of the EEG state feed-back learning system at the time of the memory work by the simple electro-encephalograph", IPSJ SYMPOSIUM SERIES: MULTIMEDIA, DISTRIBUTED, COOPERATIVE AND MOBILE SYMPOSIUM (DICOMO) 2014, 2 July 2014 (2014-07-02), pages 633 - 638, XP009527098
PEDIATRIC DENTAL JOURNAL, vol. 32, 1994, pages 872 - 888
See also references of EP 3868288A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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