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REVIEW ARTICLE
Year : 2014  |  Volume : 28  |  Issue : 3  |  Page : 140-144

Evoked potentials: Visual evoked potentials (VEPs): Clinical uses, origin, and confounding parameters


Department of Physiology, Regional Institute of Medical Sciences, Imphal, Manipur, India

Correspondence Address:
Jayshree Phurailatpam
Department of Physiology, Regional Institute of Medical Sciences, Imphal - 795 004, Manipur
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4958.148494

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Background: A study of visual evoked potentials (VEPs) is an important diagnostic tool used equally by neurophysiologist, ophthalmologist, neurologists, and neurosurgeons. Many neurological disorders present with visual abnormalities and detection of subclinical lesions affecting the visual system which are poorly visualized by MRI or in unreliable clinical examination or ruling out of psychogenic origin, depends mainly on the VEPs. Its prognostic utility are also under investigations. Objectives: To review the clinical utility, brief history, origin, and generator sites of VEPs. Data Sources: Published, peer-reviewed literature on VEPs available both in print or online. Conclusion: VEPs have emerged as an important diagnostic tool in demyelinating diseases of the CNS in the current era. An awareness of the conditions where it can be utilized along with a sound knowledge of origin and generator sites will help the clinician or the neurologist to identify the possible sites of abnormalities and thereby effectively influence the management and treatment outcome in patients with neurological disorders.


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