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Results In HV, gazing at the face reflection decreased significantly CHEPs latency (N2) and amplitude (P1-N2 and N2-P2), and increased P1-N2 habituation. Conversely, the mirror considerably decreased trigeminal CHEPs habituation in MO. Pain perception assessed by visual analogue scale was not modified either by the mirror, or between groups. The mirror decreased CHEPs parameters in the wrist numerically but not significantly in both groups. Conclusions The visually induced analgesia phenomenon using a mirror is demonstrated by a decrease of thermonociceptive potentials in HV in trigeminal and peripheral areas. In interictal migraineurs, forehead VIA is significantly impaired and gazing at the mirror strongly decreases the trigeminal habituation to thermal nociceptive stimulation. This study suggests a connectivity dysfunction between visual and trigeminal pain networks. No conflict of interest.

EHMTI-0238. Why narcissus was probably no migraineur: a study of visually induced analgesia