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Title:
SLEEP-WAKEFULNESS DETERMINATION DEVICE AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/006235
Kind Code:
A1
Abstract:
[Problem] To provide a sleep-wakefulness determination device and a program which determine sleep-wakefulness at sufficiently high accuracy by using a small mounting tool. [Solution] According to one aspect of the present invention, provided is a sleep-wakefulness determination device which can determine sleep and wakefulness of a user. The sleep-wakefulness determination device is provided with a scalar calculation unit, a feature amount calculation unit, and a sleep-wakefulness determination unit. The scalar calculation unit is configured to be able to calculate a scalar value on the basis of each component of an acceleration vector in a part of the body of the user. The feature amount calculation unit is configured to be able to calculate, on the basis of the scalar value, a feature amount for each epoch defined as a prescribed time. The sleep-wakefulness determination unit is configured to be able to determine sleep or wakefulness of the user on the basis of the feature amount of a desired epoch among the epochs and the feature amounts of surrounding epochs included in preceding and subsequent epochs of the desired epoch in a time series.

Inventors:
UEDA HIROKI (JP)
ODE KOJI (JP)
SHI SHOI (JP)
MITSUI KENTARO (JP)
KATORI MACHIKO (JP)
Application Number:
PCT/JP2020/026345
Publication Date:
January 14, 2021
Filing Date:
July 06, 2020
Export Citation:
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Assignee:
UNIV TOKYO (JP)
International Classes:
A61B5/16; A61B5/11
Foreign References:
US20140364770A12014-12-11
JP2019012370A2019-01-24
US20160255422A12016-09-01
JP2016515463A2016-05-30
JP2017169884A2017-09-28
JP2006271894A2006-10-12
JP2017537731A2017-12-21
JP2017537710A2017-12-21
JP2018520719A2018-08-02
JP2013099507A2013-05-23
Other References:
COLE,R.J. ET AL.: "Automatic Sleep/Wake Identification From Wrist Activity", SLEEP, vol. 15, no. 5, 1992, pages 461 - 469, XP000856914
Attorney, Agent or Firm:
IPX PATENT PARTNERS (JP)
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