The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Motor cortex stimulation for neuropathic pain: From phenomenology to mechanisms
Abstract
Motor cortex stimulation (MCS) is relatively recent neurosurgical technique for pain control, the use of which is growing steadily since its description in the last decade. While clinical series show that at least 50% of patients with chronic, pharmacoresistant neuropathic pain may benefit from this technique, the mechanisms of action of MCS remain elusive. In this review, we synthesise a number of studies that, combining electrophysiology and functional imaging, have permitted to proceed from phenomenology to models that may account for part of such mechanisms. MCS appears to trigger rapid and phasic activation in the lateral thalamus, which leads to a cascade of events of longer time-course in medial thalamus, anterior cingulate/orbitofrontal cortices and periaqueductal grey matter. Activity in these latter structures is delayed relative to actual cortical neurostimulation and becomes maximal during the hours that follow MCS arrest. Current hypotheses suggest that MCS may act through at least two mechanisms: activation of perigenual cingulate and orbitofrontal areas may modulate the emotional appraisal of pain, rather than its intensity, while top down activation of brainstem PAG may lead to descending inhibition toward the spinal cord. Recent evidence also points to a possible secretion of endogenous opioids triggered by chronic MCS. This, along with the delayed and long-lasting activation of several brain structures, is consistent with the clinical effects of MCS, which m…
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Metadata
- Authors
- Garcia-Larrea, L., & Peyron, R.
- Affiliations
- Inserm (FR)
- ORCID
- Peyron, Roland
- Venue
- NeuroImage
- Publisher
- Elsevier BV
- Published
- 2007
- Volume
- 37
- Pages
- S71-S79
- ISSN
- 1053-8119 (ISSN-L)
- OpenAlex
- W2029045410
- Cited by
- 259
- References
- 75
- Citations by year
- 2026: 8 · 2025: 4 · 2024: 12 · 2023: 13 · 2022: 15 · 2021: 20 · 2020: 14 · 2019: 18 · 2018: 11 · 2017: 11 · 2016: 17 · 2015: 21 · 2014: 16 · 2013: 13 · 2012: 15
- FWCI
- 2.15
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- NeuroImage (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Fondation pour la Recherche Médicale
- Topics
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
- Health Sciences › Medicine › Clinical Neurology › Deep Brain Stimulation and Movement Disorders
- Health Sciences › Medicine › Physiology (medical) › Pain Mechanisms and Treatments
- Keywords
- motor cortex stimulation, neuropathic pain, chronic pain, mechanism of action, lateral thalamus, medial thalamus, periaqueductal gray, anterior cingulate cortex, orbitofrontal cortex, descending pain inhibition, endogenous opioids, pain management
- MeSH terms
- Animals, Cerebrovascular Circulation, Chronic Disease, Endorphins, Humans, Magnetic Resonance Imaging, Motor Cortex, Pain, Peripheral Nervous System Diseases, Neurosurgical Procedures, Positron-Emission Tomography, Pain Management
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