Related Experiment Videos
Central motor conduction in Hirayama disease
1Department of Neurology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
Electroencephalography and Clinical Neurophysiology
|April 1, 1995
Summary
This study investigated Hirayama disease, finding central motor conduction to upper limbs (CMCT-ADM) was marginally prolonged. Results suggest pyramidal dysfunction does not cause lower limb hyperreflexia in Hirayama disease patients.
Area of Science:
- Neurology
- Neuroscience
- Spinal Cord Disorders
Background:
- Hirayama disease pathogenesis is linked to spinal cord microcirculation issues.
- This can cause anterior horn cell loss and sometimes lower limb hyperreflexia.
Purpose of the Study:
- To evaluate central motor conduction in upper and lower limbs in Hirayama disease patients.
- To investigate the cause of lower limb hyperreflexia in this condition.
Main Methods:
- Assessed central motor conduction to upper limbs (CMCT-ADM) and lower limbs (CMCT-TA) in 7 Hirayama disease patients.
- Evaluated H-reflex parameters (HM ratio, vibratory inhibition, reciprocal inhibition) in patients with hyperreflexia.
Main Results:
- CMCT-TA was normal in all patients.
- CMCT-ADM was marginally prolonged unilaterally in some patients.
- H-reflex tests were normal in patients with lower limb hyperreflexia.
Conclusions:
- Findings do not support pyramidal dysfunction as the cause of lower limb hyperreflexia in Hirayama disease.
- Peripheral nerve conduction delays may relate to anterior horn cell loss.