Open Access<p>Medial Orbitofrontal De-Activation During Tonic Cold Pain Stimulation: A fMRI Study Examining the Opponent-Process Theory</p>
Author(s) -
Nathalie Bitar,
Jules R. Dugré,
Serge Marchand,
Stéphane Potvin
Publication year - 2020
Publication title -
journal of pain research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 49
ISSN - 1178-7090
DOI - 10.2147/jpr.s248056
Subject(s) - orbitofrontal cortex , medicine , functional magnetic resonance imaging , stimulation , neuroscience , insula , somatosensory system , nociception , noxious stimulus , thalamus , chronic pain , tonic (physiology) , prefrontal cortex , psychology , cognition , receptor
While the concomitant administration of painful and rewarding stimuli tends to reduce the perception of one another, recent evidence shows that pleasant pain relief is experience after the interruption of noxious stimuli. On neurobiological grounds, these opponent processes should translate into decreased activity in brain reward regions during nociceptive stimulation and increased activity in these regions after its interruption. While growing evidence supports the latter assumption, evidence is lacking in humans in support of the former.