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. 2017 Sep 5;11:433. doi: 10.3389/fnhum.2017.00433

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Copyright © 2017 Cox, Schapiro, Manoach and Stickgold.

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) or licensor 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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Group topographies of fast and slow spindle density (A–H) and spindle amplitude (I–P) during N2 and N3. (A,I) N2 fast spindles. (B,J) N3 fast spindles. (C,K) N2 > N3 fast spindles difference. (D,L) N2 slow spindles. (E,M) N3 slow spindles. (F,N) N2 > N3 slow spindles difference. (G,O) N2 fast > slow difference. (H,P) N3 fast > slow difference. Significant electrodes from paired tests with cluster correction indicated on difference maps as black (positive) and white (negative) dots. Cluster size(s) (number of electrodes) and P value(s) indicated below each difference map. Color scales are shared for (A,B), (D,E), (I,J,L,M), (K,N), and (O,P).