Automatic sleep stage method based on electroencephalogram, heart rate variability and coherence between electroencephalogram and heart rate variability
A technology of heart rate variation and sleep staging, which is applied in the measurement of pulse rate/heart rate, medical science, sensors, etc. It can solve problems such as heavy workload, discomfort of subjects, and large disturbance of normal sleep, so as to improve accuracy and simplicity sex, considerable social and economic benefits
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[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] As a physiological state, sleep must be reflected in multiple parts of the body and multiple physiological processes. EEG is the central nervous system signal and the most sensitive and accurate physiological signal for sleep staging. The ECG signal is the autonomic nervous signal. The extracted heart rate variability signal (HRV) reflects the activity level of the sympathetic nervous system and parasympathetic nervous system, while the autonomic nervous system The regulation ability changes with the degree of sleep. Studies have shown that autonomic nerve activity and sleep have a common regulatory center in the subcortex. ECG signals, as the main autonomic nerve signals, are effectively fused with EEG signals, which is bound to improv...
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