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. 2016 Feb 12;11:224–238. doi: 10.1016/j.nicl.2016.02.003

Fig. 7.

Fig. 7

Correlations between enhancement in EEG coherence in the upper alpha EEG band during the rtfMRI-nf training and depression severity. A) Pairs of EEG channels that showed correlations (p < 0.05, uncorr.) between the EEG coherence slope (ECS) and HDRS depression severity for the experimental group (EG). B) Definition of the EEG coherence slope (ECS) across Happy Memories conditions in four rtfMRI-nf runs (Practice, Run 1, Run 2, Run 3) for a given pair of EEG channels for a given subject. C) Example of correlation between the ECS values (for F3 vs F7) and HDRS depression severity ratings for the participants in the EG. Each data point corresponds to one participant. Pairs of EEG channels exhibiting such correlations are denoted by red segments in A). D) Correlation between the average ECS laterality and HDRS depression severity ratings. ECS(L) is a mean ECS for fronto-temporal EEG channels on the left (Fp1, F3, F7, FC5, T7, ten pairs). ECS(R) is a mean ECS for the corresponding fronto-temporal EEG channels on the right (Fp2, F4, F8, FC6, T8, ten pairs). HDRS — Hamilton Depression Rating Scale. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)