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Pathophysiology of muscle tone
12nd Department of Neurology, University of Messina, Italy.
Functional Neurology
|July 1, 1990
Summary
This study explores muscle tone pathophysiology using recent motor system organization knowledge. Alterations in muscle tone, like rigidity and spasticity, are modeled in lesions of the lateral and ventral motor systems.
Area of Science:
- Neuroscience
- Motor System Physiology
Background:
- Muscle tone is crucial for movement and posture.
- Understanding muscle tone pathophysiology is key to neurological disorder diagnosis.
- Recent advances in motor system organization provide new insights.
Purpose of the Study:
- To discuss the pathophysiology of muscle tone.
- To model muscle tone alterations based on motor system lesions.
- To integrate recent knowledge of motor system organization.
Main Methods:
- Review of recent knowledge on motor system organization.
- Analysis of decerebrate rigidity as a model.
- Examination of "pyramidal" spasticity and extrapyramidal rigidity.
Main Results:
- Decerebrate rigidity, pyramidal spasticity, and extrapyramidal rigidity serve as models.
- These models illustrate muscle tone alterations in specific motor system lesions.
- Lateral and ventral motor system lesions are linked to distinct tone changes.
Conclusions:
- Muscle tone pathophysiology is explained by motor system organization.
- Specific lesion types correlate with observed rigidity and spasticity patterns.
- This framework aids in understanding neurological conditions affecting muscle tone.