Pattern reversal visual evoked potentials in Japanese patients with multiple sclerosis.
نویسندگان
چکیده
منابع مشابه
The Effect of Oral Verapamil on the Visual Evoked Potentials in Definite Multiple Sclerosis Patients
Introduction: Ionic channel rearrangements through the demyelinated axons or supporting media play significant role in remission of the neurological deficit in MS patients. In this study the effects of Verapamil as a calcium channel blocker on central conduction have been investigated through the evaluation of changes in P100 latency of the visual evoked potential. Method: This randomized doubl...
متن کاملPattern-onset visual evoked potentials in suspected multiple sclerosis.
Visual evoked potentials (VEPs) were obtained by monocular stimulation using a checkerboard pattern-reversal and pattern-onset technique. In 11 normal subjects, pattern-onset VEPs were generally larger, better defined, and less ambiguous than those elicited by pattern-reversal, because of the biphasic waveform characteristically obtained with pattern-onset stimulation. In 68 of 105 patients wit...
متن کامل[Pattern-reversal visual evoked potential abnormalities in patients with defined multiple sclerosis].
INTRODUCTION Multiple sclerosis is an idiopathic demyelinating disease that may affect the optic nerve leading to acute unilateral visual loss, which could be observed by means of evoked visual potential (VEP). This exam is much valued for studying prechiasmatic visual paths in multiple sclerosis. PURPOSE To analyze the findings of pattern reversal VEP in patients with prior diagnosis of mult...
متن کاملSpatial tuning function of pattern visual evoked potentials in multiple sclerosis patients without optic neuritis history.
AIM To explore amplitude and latency-check size function in multiple sclerosis (MS) patients without optic neuritis history. METHODS Thirty-six MS patients and 21 control subjects were included. Pattern visual evoked responses to ive check sizes (2°, 1°, 30', 15', and 7') were recorded. RESULTS P100 amplitudes were significantly reduced in 2°, 1° and 7' checks and, P100 latencies were signi...
متن کاملValue of hyperventilation in pattern-reversal visual evoked potentials.
The effects of a standard 3 minutes' hyperventilation on the full-field pattern-reversal visual evoked potential (VEP) were studied in 33 normal subjects, 30 definite multiple sclerosis patients and in twenty-five patients with abnormal VEPs due to either tumourous compression of the anterior visual pathways or optic atrophy of other origin. Significantly greater reductions in P100 latency occu...
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ژورنال
عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry
سال: 1982
ISSN: 0022-3050
DOI: 10.1136/jnnp.45.12.1139