Sleep staging method and system based on nonlinear mutual dependency
An interdependent and sleep staging technology, applied in the field of sleep staging methods and systems based on nonlinear interdependence, can solve the problems of slow speed, low accuracy of sleep staging, poor EMG and OMG effects, etc. Timely, easy to obtain and monitor the effect
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Embodiment 1
[0035] This embodiment provides a sleep staging method based on nonlinear interdependence, such as figure 1 As shown, it specifically includes the following steps:
[0036] Step 1. Obtain two kinds of EEG signals of the subject within a certain period of time: the first EEG signal X′={x′ n} and the second EEG signal Y'={y' n}, where n=1,...,N.
[0037] Specifically: (101) Obtain two kinds of EEG signals of the subject, wherein different EEG signals are obtained by using different EEG lead methods; assuming that there are two EEG lead methods x and y, the first EEG lead method is used The first EEG signal obtained by the connection method x, and the second EEG signal obtained by the second EEG lead method y; (102) segment each EEG signal to obtain the EEG signal in each period of time; Specifically, according to the R&K rule, each EEG signal is divided into 30 seconds as a segment, and the first EEG signal X'={x' in each period of time is obtained n} and the second EEG sign...
Embodiment 2
[0115] The present embodiment provides a sleep staging system based on nonlinear interdependence, which specifically includes the following modules:
[0116] The signal acquisition module is configured to: acquire two kinds of EEG signals of the subject within a certain period of time;
[0117] A feature extraction module, which is configured to: extract a variety of nonlinear interdependencies between the two EEG signals and a cross-correlation coefficient between the two EEG signals, and combine them into sleep features;
[0118] The classification module is configured to: use a classifier based on the sleep characteristics to obtain the sleep stage of the subject within this period of time.
[0119] It should be noted here that each module in this embodiment corresponds to each step in Embodiment 1, and the specific implementation process is the same, which will not be repeated here.
Embodiment 3
[0121] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps in the non-linear interdependence-based sleep staging method as described in the first embodiment above are realized. step.
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