Central motor conduction is abnormal in motor neuron disease.

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Central motor conduction is abnormal in motor neuron disease.

Conduction in the central motor pathways of the brain and spinal cord was studied in 12 patients with motor neuron disease. Six healthy volunteers served as controls. Transcutaneous electrical stimulation of the cortex, cervical cord, thoracic cord and conus medullaris was used to determine motor latencies to the biceps brachii, thenar eminence and tibialis anterior muscles. Prominent, and ofte...

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Electromyographic single motor unit recordings were used to study the axonal conduction velocity and the axonal refractory period of 60 motor units in patients with severe motor neuron disease. Eighteen per cent of the motor units had abnormally low axonal conduction velocity probably due to secondary degenerative changes. Thirty-two per cent of the motor units had abnormally long axonal refrac...

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Neurologists in the 19th century recognized that muscle weakness could be due to primary disorders of muscle or secondary to loss of neuromuscular integrity, as happens when peripheral nerves are cut or when motor neurons degenerate. Furthermore, it was observed that there are forms of motor neuron degeneration which selectively affect upper motor neurons or lower motor neurons. A combination o...

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Assessing motor neuron disease.

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Motor neuron disease (MND) represents one ofthe major unsolved problems in neurology. The literature is characterized by numerous speculative theories, mostly derived by analogy with other recognized causes of motor neuron death such as poliomyelitis, or from toxic exposures such as lead poisoning. However, analogous reasoning of this type has not, so far, given insights into MND itself, or res...

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ژورنال

عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry

سال: 1987

ISSN: 0022-3050

DOI: 10.1136/jnnp.50.2.159