| Visual evoked cortical potentials (V.E.C.P.) by television presentation of different patterned stimuli to patients with multiple sclerosis. | |
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MedLine Citation:
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PMID: 7338451 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Visual pattern reversal evoked potentials constitute a test that can reveal early pathological changes in multiple sclerosis. Sixty nine subjects (52 controls, and 17 patients) were studied with this technique. The transient potentials evoked by checkerboard pattern reversal reveal an increase in the CII peak latency (significantly different from the controls) in M.S., with single elements of 15 and 30 min of arc and 20%-50% of contrast depth. The steady state potentials are absent or show phase lags in some patients with transient responses within the normal limits. The delayed evoked responses are detectable in a high percentage of patients with M.S., even when ocular symptoms are not seen in the clinical observation. Transient and steady-state E.Ps can furnish early tools for evaluation of functionality of visual pathways related to retinal form- and movement-analyzers, the former being sensitive to high spatial frequencies but conducting more slowly than the latter. |
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Authors:
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D Gambi; P M Rossini; M Onofri; L Marchionno |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Italian journal of neurological sciences Volume: 1 ISSN: 0392-0461 ISO Abbreviation: Ital J Neurol Sci Publication Date: 1980 Mar |
Date Detail:
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Created Date: 1982-06-24 Completed Date: 1982-06-24 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8006502 Medline TA: Ital J Neurol Sci Country: ITALY |
Other Details:
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Languages: eng Pagination: 101-6 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Evoked Potentials, Visual* Female Humans Male Middle Aged Multiple Sclerosis / diagnosis* Optic Neuritis / diagnosis Photic Stimulation / methods* Reaction Time Television* Vision Disorders / diagnosis Visual Pathways / physiopathology |
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