ArticleJournal of pain research2018
Visually induced analgesia during face or limb stimulation in healthy and migraine subjects.
Article in Journal of pain research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 3 citations in OpenAlex.
- Understanding inter-individual variability of experimental pain habituation and conditioned pain modulation in healthy individuals.Scientific reports · 2024Article
- Habituation to Pain in Patients with Chronic Pain: Clinical Implications and Future Directions.Journal of clinical medicine · 2023Review
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundVisually induced analgesia (VIA) defines a phenomenon in which viewing one's own body part during its painful stimulation decreases the perception of pain. VIA occurs during direct vision of the stimulated body part and also when seeing it reflected in a mirror. To the best of our knowledge, VIA has not been studied in the trigeminal area, where it could be relevant for the control of headache. SUBJECTS AND
methodsWe used heat stimuli (53°C) to induce pain in the right forehead or wrist in 11 healthy subjects (HSs) and 14 female migraine without aura (MO) patients between attacks. The subjects rated pain on a visual analog scale (VAS) and underwent contact heat-evoked potential (CHEP) recordings (five sequential blocks of four responses) with or without observation of their face/wrist in a mirror.
resultsDuring wrist stimulation, amplitude of the first block of P1-P2 components of CHEPs decreased compared to that in the control recording when HSs were seeing their wrist reflected in the mirror (
conclusionThis study adds to the available knowledge on VIA and demonstrates this phenomenon for painful stimuli in the trigeminal area, as long as CHEPs are used as indices of central pain processing. In migraine patients during interictal periods, VIA assessed with CHEPs is within normal limits in the face but absent at the wrist, possibly reflecting dysfunctioning of extracephalic pain control.
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