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Figure 1 | International Archives of Medicine

Figure 1

From: Retrospective cross-validation of automated sleep staging using electroocular recording in patients with and without sleep disordered breathing

Figure 1

Block diagram of the algorithm for automated sleep staging. SBI – ratio of the average sigma and beta power; DBI – ratio of delta and beta power; BEI – ratio of beta and EMG power; EMI – ratio of the delta power before and after median filtering; NAR, LAR – number and length of arousals; NSP – number of sleep spindles.

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