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Updated: Jun 6, 2026
11:29
Real-time Video Projection in an MRI for Characterization of Neural Correlates Associated with Mirror Therapy for Phantom Limb Pain
Published on: April 20, 2019
[Phantom limb pain originates from dysfunction of the primary motor cortex].
Masahiko Sumitani1, Satoru Miyauchi, Hironobu Uematsu
1Department of Anesthesiology and Pain Relief Center The University of Tokyo Hospital, Tokyo 113-0033.
Masui. the Japanese Journal of Anesthesiology
|November 17, 2010
Summary
Phantom limb pain stems from central nervous system changes, specifically in the sensorimotor cortex. Reconciling sensory and motor representations may alleviate this neuropathic pain.
Area of Science:
- Neuroscience
- Central Nervous System Disorders
- Pain Management
Context:
- Phantom limb pain is a complex neurological condition.
- It is linked to neuroplasticity following limb amputation or deafferentation.
- The sensorimotor cortex is implicated in the mechanisms of phantom limb pain.
Purpose:
- To explore the role of sensorimotor cortex plasticity in phantom limb pain.
- To propose that a dissociation between motor and sensory representations causes pain.
- To suggest sensorimotor integration as a therapeutic target.
Summary:
- Limb amputation leads to brain-body connection plasticity, causing the disappearance of the limb's cortical motor representation.
- The sensory representation persists, leading to the sensation of a phantom limb.
- A proposed dissociation between motor and sensory cortex representations induces pathological pain.
Impact:
- Understanding sensorimotor cortex dissociation offers insights into neuropathic pain mechanisms.
- Neurorehabilitation and artificial neuromodulation strategies targeting sensorimotor integration may alleviate phantom limb pain.
- This research could inform novel therapeutic approaches for amputees experiencing phantom limb pain.
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