Fig 6 -

(A) Effect of critical-band masking on our SA network’s performance. We used high-, medium-, and low-intensity noise: SNR = 5, 10, and 20, respectively (Methods). Overall, high-intensity noise decreased performance more than low-intensity noise. The deleterious effect of noise was pronounced in some frequency bands but not others. E.g., adding bandlimited noise to test signals in the delta band (Methods), and the upper, horizontal solid line indicates network performance in the absence of noise (MCC = 0.38). The error bars (shown only for high-intensity noise) are 95% confidence intervals computed across folds of our subjectwise 10-fold cross-validation. The Greek letters (top) mark traditional frequency bands; sigma marks the band associated with sleep spindles. (B) Effect of critical-band masking on our re-trained SA network; we re-trained the network after data were stage-wise shuffled. Adding bandlimited noise to test signals in the delta and alpha (8 to 13 Hz) bands, here, had little effect on network performance. By contrast, noise in the lower beta band and gamma band heavily reduced performance. Other graphical conventions are as in (A). Upper horizontal line marks the stage-wise shuffled no-noise response (MCC = 0.275).