Results 261 to 270 of about 147,429 (300)

Visual evoked potentials in sarcoidosis

Neurology, 1981
The visual evoked potential to pattern reversal was recorded in 50 patients with sarcoidosis. Abnormalities of latency and amplitude were found in 15 patients (30%), including all 4 patients with clinically evident brain disease and 4 of 17 patients with overt ocular disease. Twenty-nine patients had no clinical evidence of ocular or neurologic disease,
L J, Streletz, R A, Chambers, S H, Bae, H L, Israel   +3 more
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Visual Evoked Potentials

2009
Visual evoked potentials (VEPs) have a role in evaluating patients with neurologic disease affecting the optic pathway. In patients with lesions involving the optic nerve and anterior chiasm, VEPs have several important advantages: (1) they are objective and reproducible and may demonstrate a functional abnormality that is not evident on physical ...
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The Multifocal Visual Evoked Potential

Journal of Neuro-Ophthalmology, 2003
With the multifocal technique, visual evoked potentials (VEPs) can be recorded simultaneously from many regions of the visual field. For the multifocal VEP (mfVEP), the patient views a display that typically contains 60 sectors, each with a checkerboard pattern.
Donald C, Hood, Jeffrey G, Odel, Bryan J, Winn   +2 more
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Visual evoked potentials of infants

Revue d&'apos;Electroencéphalographie et de Neurophysiologie Clinique, 1972
Resume Les auteurs ont montre dans un travail anterieur que la configuration du P.E.V. chez le nouveaune et chez l'enfant de 3 mois montre une grande var iabilite diurne ; par ailleurs et contrairement au P.E.V. de l'adulte la configuration de ce P.E.V. n'est pas liee au cycle de veille-sommeil.
R J, Ellingson, G H, Lathrop, B, Nelson, T, Danahy   +3 more
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Visual evoked potentials in monkeys

Electroencephalography and Clinical Neurophysiology, 1979
Visual evoked potentials (VEPs) were recorded from 2 cortical sites in stump-tailed macaques. VEPs recorded from striate cortex were basically consistent between animals (especially at low light intensity), remained remarkably stable over time, and compared favorably to VEPs reported by other investigators.
E W, Snyder, E C, Beck, R E, Dustman
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Visual Evoked Potentials

2020
This chapter discusses flash-induced visual evoked potentials (VEPs) and pattern-reversal visual evoked potentials (PRVEPs), their clinical utility, method of acquisition, and standard recording protocol. It describes the major components of flash VEP and PRVEP, their common morphologic variations, and influence of various subject-related and technical
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[Visually evoked potential].

Oftalmologia (Bucharest, Romania : 1990), 2009
The visual evoked potential (VEP) is a recording of electrical activity of the visual cortex created by stimulation of the retina. The main indications are monitoring of visual function in babies and the investigation of optic neuropathy, particularly when associated with demyelination. It can also be used to monitor macular pathway function.
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Visual-Evoked Potentials

2017
One of the important goals of surgical procedures involving the visual pathways (retina, optic nerve (ON), optic chiasm, optic tracts, lateral geniculate nucleus in the thalamus, optic radiation, and occipital visual cortex) is the preservation of visual function and in cases of visual impairment, where possible, its improvement (Banoub et al ...
Sandra C. Toleikis, J. Richard Toleikis
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Visual Evoked Potentials in Alcoholics

Clinical Electroencephalography, 1983
Visual evoked potentials were obtained in nineteen patients during the early phase of alcohol intoxication. Out of the thirty-eight responses recorded in the nineteen patients, 13% were found to be abnormal (5 responses). Repeated testing was done in all patients with abnormal responses at three to four week intervals following treatment with vitamins ...
I, Ahmed, K S, Hines
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Visual evoked potentials in hemiparkinsonism

Electroencephalography and Clinical Neurophysiology, 1981
Abstract Visual evoked potentials (VEPs) were recorded bilaterally from the parietal areas in patients with hemiparkinsonism. VEPs recorded over the hemisphere contralateral to the side of parkinsonian symptomatology showed diminished maximal amplitude of secondary components and increased peak latency of an early positive component (P 100 ). After a
M, Mintz, R, Tomer, H, Radwan, M S, Myslobodsky   +3 more
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