Objective The quality of sleep has a great relationship with health. The result of sleep stage classification is an important indicator to measure the quality of sleep and treat sleep disorders. Methods The EEG signals about wake and the first stage of non-rapid eye movement sleep we used in this paper are extracted from the same person at the same time. After the symbolization,we compute the average energy dissipations and make the statistical analysis and multi-sample analysis. Results The average energy dissipation reflects the changes of sleep stages,which is higher in wake stage than in the first stage of non-rapid eye movement sleep,and is confirmed by statistical analysis and multi-sample experiments. Conclusions The average energy dissipation can be applied into automatic sleep stage classification. Multi-parameter analysis could achieve a higher accuracy of sleep stage classification.
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