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. Author manuscript; available in PMC: 2021 Jul 31.
Published in final edited form as: Physiol Meas. 2018 Dec 21;39(12):124005. doi: 10.1088/1361-6579/aaf339

Figure 4:

Figure 4:

A comparison of expert-scored hypnograms and the output from the proposed approach for the (i) four class problem, (ii) three class problem (a), (iii) three class problem (b), and (iv) two class problem. Note that each epoch is five minutes for the algorithm output and 30 seconds for the expert annotation, so rapid changes between epochs (less than 5 minutes) are undetectable.