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. 2018 Feb 26;115(11):E2528–E2537. doi: 10.1073/pnas.1703643115

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Fig. 2. — Interpartner EEG coupling in (A) partner no-touch–no-pain vs. pain-alone conditions (12 links); (B) partner touch–no-pain vs. pain-alone conditions (10 links); (C) partner no-touch–pain vs. pain-alone conditions (5 links); (D) partner touch–pain vs. all other conditions (22 links). The upper head represents the female partner (the pain target), and the lower head represents the male partner (the toucher). The orange lines represent statistically significant coupling links between corresponding areas in the male and female brains. The head color reflects the number of links.