Results 271 to 280 of about 494,653 (342)
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Neurologija, 1987
Abstract : Progress over the past year has been rapid and wide ranging, covering two primary areas. First, in the area of visual attention, we have shown both the existence of a sustained and a transient component of enhanced pattern recognition. This cannot be explained by visual transients or eye movements.
Lelas-Bahun, Nada +2 more
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Abstract : Progress over the past year has been rapid and wide ranging, covering two primary areas. First, in the area of visual attention, we have shown both the existence of a sustained and a transient component of enhanced pattern recognition. This cannot be explained by visual transients or eye movements.
Lelas-Bahun, Nada +2 more
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Cortical Source Locations of Pattern-related Visual Evoked Potentials recorded from the Human Scalp
Nature, 1971D. Jeffreys
semanticscholar +3 more sources
Transient visually evoked potential
Journal of the Optical Society of America, 1977A light delivered to the human eye will instigate changes in electrical potentials recorded over the visual cortex that last for some finite time, at least several hundred milliseconds. If the rate of stimulation is sufficiently low, the response is completed before the next visual stimulus arrives; the cortical potential is then called a transient ...
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The effect of mental load on psychophysical and visual evoked potential visual acuity
Ophthalmic & physiological optics, 2022Under real‐world conditions, tasks dependent on visual acuity may need to be performed in the presence of a mental load arising from concurrent, non‐visual tasks. Therefore, measuring visual acuity concurrently with mentally demanding tasks may reflect a
M. Mahjoob +2 more
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Neurosurgery, 1979
abstract Visual evoked potentials (VEPs) to repetitive flash stimuli were abnormal in 10 patients with documented hydrocephalus. Abnormalities included latency delays, fatigability, and asymmetries. Both latency and wave form disturbances improved in the postshunt period.
Frederick H. Sklar +2 more
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abstract Visual evoked potentials (VEPs) to repetitive flash stimuli were abnormal in 10 patients with documented hydrocephalus. Abnormalities included latency delays, fatigability, and asymmetries. Both latency and wave form disturbances improved in the postshunt period.
Frederick H. Sklar +2 more
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Acta Ophthalmologica, 2016
SummaryVEPs in neuro‐ophthalmology are important for diagnosis and surveillance of intracranial pathology. The VEP can indicate the impact of pathology along the afferent visual pathway to the striate cortex. The pathology may directly or indirectly affect the visual pathway.
Flora M. Hammond, Sheryl Katta-Charles
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SummaryVEPs in neuro‐ophthalmology are important for diagnosis and surveillance of intracranial pathology. The VEP can indicate the impact of pathology along the afferent visual pathway to the striate cortex. The pathology may directly or indirectly affect the visual pathway.
Flora M. Hammond, Sheryl Katta-Charles
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Visual evoked potentials in sarcoidosis
Neurology, 1981The 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 +3 more
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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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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, 2003With 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 +2 more
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Visual evoked potentials of infants
Revue d&'apos;Electroencéphalographie et de Neurophysiologie Clinique, 1972Resume 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 +3 more
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