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Electrophysiological Evaluation of Children with Visual Impairment
Seminars in Ophthalmology, 1991LECTROPHYSIOLOGICAL tests should E be considered an extension of the ophthalmic evaluation and, as such, are important diagnostic tools for the clinical ophthalmologist. Most practicing ophthalmologists will never actually perform these tests themselves, but should know when they are to be used, what type of information is obtained, and generally how ...
R G, Weleber, E A, Palmer
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Electrophysiological correlates of visual detection in the cat
Brain Research, 1974Abstract Average evoked responses to near-threshold visual stimuli were recorded from 9 cats as they performed a stimulus detection task. The amplitude of response components in the optic tract and striate cortex was a logarithmic function of stimulus intensity.
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An electrophysiological correlate of human visual awareness
Neuroscience Letters, 2004In order to shed more light on the neural correlates of human visual awareness, event-related potentials (ERPs) were recorded in a perceptual threshold experiment. The masked stimuli (line-drawings of coherent, familiar objects and scrambled, meaningless non-objects) were presented below, near, and above the subjective perceptual threshold. A prominent
Maria, Wilenius-Emet +2 more
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Childhood albinism Visual electrophysiological features
Ophthalmic Paediatrics and Genetics, 1990Flash ERGs and VEPs, and VEPs to pattern onset and pattern reversal stimulation were recorded in young albino children and compared to age-matched, normally pigmented, controls. In albinos, the ERG had a significantly larger a-wave, and significantly shorter latencies for both the a-wave and b-wave.
A, Kriss, I, Russell-Eggitt, D, Taylor
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Recent advances in the electrophysiology of visual disorders
Current Opinion in Ophthalmology, 1995There have been a number of technical developments in the field of visual electrodiagnosis in recent years, some of which are beginning to "bear fruit" in terms of improving accuracy of diagnosis. In addition there is more information available from electrophysiology and neurochemistry of retinal function that will lead to a clearer understanding of ...
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Visual Electrophysiology and Reading/Learning Difficulties
Journal of Learning Disabilities, 1981The literature relating visual problems, reading and academic difficulties with neurophysiological mechanisms shows positive interaction among these factors. Both visual evoked response and encephalographic studies show parietal or occipitoparietal neurophysiological anomalies which can be used to discriminate between normal and disabled readers to ...
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Photo-stimulator for visual electrophysiology
Medical & Biological Engineering & Computing, 1977D H, Brown, B P, Choudhury
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