RT Journal Article
SR Electronic
T1 Visual and auditory evoked responses in patients with Parkinson's disease.
JF Journal of Neurology, Neurosurgery & Psychiatry
JO J Neurol Neurosurg Psychiatry
FD BMJ Publishing Group Ltd
SP 227
OP 232
DO 10.1136/jnnp.44.3.227
VO 44
IS 3
A1 M J Gawel
A1 P Das
A1 S Vincent
A1 F C Rose
YR 1981
UL http://jnnp.bmj.com/content/44/3/227.abstract
AB Visual evoked responses were obtained in 47 Parkinsonian patients and 26 age-matched controls. The stimulation to binocular and uniocular latency of the major positive peak was longer in the Parkinsonian patients and its amplitude was smaller than in the control subjects. There was a large interocular difference suggesting that at least part of the delay occurs at prechiasmatic level. The latency and amplitude varied markedly following ingestion of levodopa as Sinemet. Auditory evoked potentials were obtained in 16 Parkinsonian patients and 11 age-matched controls. The latency of the NV wave was prolonged in the former although the amplitude was the same, suggesting that the abnormality may be a widespread one.