Daily sleep starting period detection method based on alpha brain wave

A detection method, EEG technology, applied in the medical field, can solve problems such as the inability to detect short-term eye-closing events

Inactive Publication Date: 2018-12-04
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] Aiming at the defect that the prior art cannot detect short-term eye-closing events caused by extreme sleepiness, the present invention proposes a method for detecting the onset of daily sleep based on EEG alpha waves, which can directly Determine the onset period of sleep due to sleep deprivation, and quickly and accurately detect whether the subject has entered a sleep state

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  • Daily sleep starting period detection method based on alpha brain wave
  • Daily sleep starting period detection method based on alpha brain wave
  • Daily sleep starting period detection method based on alpha brain wave

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Embodiment Construction

[0029] In this example:

[0030] 1) The attenuation to disappearance mode of the alpha wave is different from the typical alpha wave blocking phenomenon. The alpha wave blocking phenomenon corresponds to the continuous occurrence of the alpha wave and no alpha wave attenuation in the eye-closing event;

[0031] 2) Different from the alpha wave decay pattern in sleep. The eyes are always closed during sleep, the attenuation of the alpha wave presents a form of repeated intermittent appearance and disappearance, and the proportion of the time of the intermittent appearance of the alpha wave activity will gradually decrease as the degree of sleep deepens. .

[0032] 3) The alpha wave attenuates to the disappearance mode, which occurs in the event of closing the eyes. The alpha wave appears repeatedly without interruption, and there is an obvious time division point. However, after this time-splitting point, the alpha waves disappear almost completely until the end of the eye-cl...

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Abstract

The invention discloses a sleep starting period detection method based on an alpha brain wave. The method comprises the following steps: collecting electroencephalogram signals of a head region and vertical electrooculogram signals of eye peripheries; simultaneously monitoring and recording face information videos and display images of the electroencephalogram and electrooculogram signals by virtue of a camera; marking out an eye closing interval in accordance with the recorded electroencephalogram and electrooculogram signals and recorded face information videos; and obtaining an alpha wave energy change curve within the eye closing interval through time-frequency analysis, and judging sleep starting when the energy change curve has a trend of obvious drop. According to the detection method, a sleep starting period, which is generated due to sleep deprivation, can be directly judged according to a mode of the attenuation of the alpha brain wave to disappearance, so that whether the object enters a sleep state or not can be rapidly and accurately detected.

Description

technical field [0001] The present invention relates to a technique in the medical field, in particular to a method for judging the onset period of sleep in daily work and life according to the attenuation to disappearance mode of the alpha wave of the EEG. Background technique [0002] When people suffer from lack of sleep or disordered work and rest arrangements, they will cause a certain degree of sleep deprivation. In this case, it is very easy to cause fatigue and drowsiness or even fall asleep. In the field of fatigue driving, road traffic accidents caused by drivers falling asleep during driving are common. Among various fatigue detection methods, EEG signals are considered to be the "gold standard" for fatigue detection. In the previous literature, the focus was on whether the energy of various brain wave frequency bands (alpha wave, theta wave, beta wave, delta wave) increased or decreased in the fatigue state, so as to judge whether fatigue was present. Among the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0476A61B5/00A61B5/0496A61B5/11
CPCA61B5/1103A61B5/4812A61B5/7257A61B5/316A61B5/369A61B5/398
Inventor 吕宝粮焦影影
Owner SHANGHAI JIAO TONG UNIV
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