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. 2015 Sep 2;114(5):2672–2681. doi: 10.1152/jn.00444.2015

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Fig. 8. — Left and center: group-level average ERP waveforms of the signals measured from Pz vs. A1A2, before capsaicin injection (T0; left) and 30 min after capsaicin treatment (T1; center) for both the control arm and the capsaicin-treated arm for each pinprick intensity. Right: group-level average subtracted (T1 − T0) waveforms for the 2 arms (capsaicin treated and control) and each pinprick intensity. Gray shading indicates the time window for which the 2 arms significantly differ after capsaicin treatment (n = 18 for 128 mN).