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. 2019 May 3;7:174. doi: 10.3389/fped.2019.00174

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Copyright © 2019 O'Toole and Boylan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Examples of continuous (A) and discontinuous (B) EEG activity from 2 preterm infants of gestational age 30 weeks 0 days in (A) and 27 weeks 0 days in (B). Quantitative features in (C) distinguish between continuous and discontinuous EEG activity. EEG from 21 infants recorded within days after birth. Dots represents AUC (area under the receiver operator characteristic) and lines represent 95% confidence intervals. AUC values of 0.5 represents random chance and 1 represents maximum separation. IBI, inter-burst interval; rEEG, range-EEG; LM, lower margin; UM, upper margin; SP, spectral power; FD, fractal dimension. Frequency bands: f1, 0.5–3 Hz; f2, 3–8 Hz; f3, 8–15 Hz; and f4, 15–30 Hz.