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Visual evoked potentials in hemiparkinsonism
Electroencephalography and Clinical Neurophysiology, 1981Abstract 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 +3 more
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EFFECTS OF EXERCISE ON VISUAL EVOKED POTENTIALS
International Journal of Neuroscience, 2005The aim of this study was to investigate the effects of acute or habitual exercise on visual evoked potentials (VEP). The study group consisted of 9 female and 7 male volleyball players and the control group contained 9 female and 7 male students who were not involved in any sportive activity.
Özmerdivenli R. +6 more
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Bulletin de la Societe belge d'ophtalmologie, 1983
Of the cortical potential evoked by visual stimuli several components can be distinguished. A very good example of VEP description was given by Ciganek (1961)/ Fig 4.1).
S. L. Visser +2 more
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Of the cortical potential evoked by visual stimuli several components can be distinguished. A very good example of VEP description was given by Ciganek (1961)/ Fig 4.1).
S. L. Visser +2 more
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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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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.
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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.
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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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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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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 Visual Evoked Potential in Neurophthalmology
International Ophthalmology Clinics, 1980A M, Halliday, J, Mushin
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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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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.
openaire +1 more source