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Updated: Sep 29, 2026

In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
Published on: June 15, 2018
Distinct hyperintense MRI signal changes in the corticospinal tracts of a patient with motor neuron disease
C M Ellis1, A Simmons, J M Dawson
1Department of Clinical Neurosciences, Institute of Psychiatry and Guy's, King's & St Thomas' School of Medicine & Dentistry, London, UK.
Abstract:
Neuroimaging in motor neuron disease (MND) is currently performed to exclude other pathologies, though abnormalities may be seen which are consistent with the diagnosis. We report a patient with rapidly progressive MND exhibiting extensive changes on a variety of contemporary magnetic resonance images, which is most likely to represent severe corticospinal tract degeneration.
Insights
Neuroimaging in motor neuron disease (MND) can reveal abnormalities. This case shows extensive magnetic resonance imaging changes indicating severe corticospinal tract degeneration in rapidly progressive MND.
Area of Science:
- Neurology
- Neuroimaging
- Neurodegeneration
Background:
- Neuroimaging in motor neuron disease (MND) primarily excludes other conditions.
- Subtle imaging abnormalities may suggest MND but are not diagnostic.
- Current neuroimaging protocols are not optimized for detecting MND-specific changes.
Observation:
- A patient presented with rapidly progressive motor neuron disease.
- Extensive neuroimaging abnormalities were observed across multiple MRI sequences.
- These changes were particularly pronounced in the corticospinal tracts.
Findings:
- The observed magnetic resonance imaging (MRI) findings are consistent with severe corticospinal tract degeneration.
- The pattern of degeneration suggests a specific pathological process within the motor pathways.
- Advanced MRI techniques may reveal characteristic patterns of neurodegeneration in MND.
Implications:
- Neuroimaging may play a more direct diagnostic role in motor neuron disease.
- Identifying severe corticospinal tract degeneration could aid in early diagnosis and prognosis.
- Further research into neuroimaging biomarkers for MND is warranted.
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