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The effects of intranasal OT on parasympathetic cardiac control. “Prespray” corresponds to the 5-min interval before spray intake, “spray” to the 5-min interval right after spray intake, and “postspray” to the subsequent 5-min interval (i.e., 5–10 min). *P < 0.05 versus basal. Markers represent the mean HF HRV values (+SEM) for the OT (black) and saline (white) treatments.
