نتایج جستجو برای: pattern visual evoked potentials
تعداد نتایج: 808180 فیلتر نتایج به سال:
This technical paper deals with the application of the Wavelet Transform to the study of evoked potentials. In particular, Wavelet Transform gives an optimal time-dependent frequency decomposition of the evoked responses, something difficult to be achieved with previous methods such as the Fourier Transform. We describe in detail the protocol for implementing the decomposition based on the Wave...
A 73-year-old man developed a fulminant form of Guillain-Barrd syndrome with abolition of brainstem reflexes. Antibodies to GQ1b were positive (1:180). The clinical findings mimicked a "brain death" pattern for a period of 12 days. In contrast, the EEG showed remaining cerebral electrical activity. Brainstem auditory evoked potentials, long-latency auditory potentials and flash-evoked visual po...
Background: Visual, brain stem auditory and somatosensory evoked potentials (EPs) have been traditional paraclinical tests to evaluate the competency of sensory tracts in multiple sclerosis (MS) patients. It seems that only one of these EPs could be sufficient, at least as a screening test. The objective of this paper is to evaluate the frequency of these three evoked potentials in definite MS ...
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