Article

Assessment of motor neuron excitability in parkinsonian rigidity by the F wave.

University of Genoa; Clinica Neurologica dell'Università
Journal of Neurology (impact factor: 3.47). 02/1985; 232(4):246-9. DOI:10.1007/BF00313788 pp.246-9
Source: PubMed

ABSTRACT F-wave responses from abductor pollicis brevis muscle occurred more frequently, with a larger amplitude and longer duration in rigid parkinsonian patients than in age-matched normal controls. F-wave potentiation during voluntary contraction was impaired in parkinsonian patients. These findings suggest that spinal motor neuron excitability is enhanced in rigidity. F-wave amplitude was significantly correlated to the clinical evaluation of motor disability, so that the F wave may be regarded as a useful approach to quantitative evaluation of rigidity.

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Keywords

abductor pollicis brevis muscle
 
clinical evaluation
 
F wave
 
F-wave amplitude
 
F-wave potentiation
 
F-wave responses
 
rigid parkinsonian patients
 
rigidity
 
spinal motor neuron excitability
 
useful approach
 

G Abbruzzese