Topographical Analysis of the Onset VEP in the Detection of Paracentral Visual Field Defects
Transient visual evoked potentials (VEP) were recorded simultaneously from 16 electrodes evenly placed over posterior scalp locations covering the occipital, posterior parietal and temporal areas. Interhemispheric amplitude difference of the N70 deflection was established across 6 homologous lateral...
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description | Transient visual evoked potentials (VEP) were recorded simultaneously from 16 electrodes evenly placed over posterior scalp locations covering the occipital, posterior parietal and temporal areas. Interhemispheric amplitude difference of the N70 deflection was established across 6 homologous lateral electrode pairs in 15 normal controls and 32 patients with chiasmatic or retrochiasmatic cerebral lesions. Twenty-three of these had known homonymous or bitemporal field defects while 9 had normal fields on routine perimetry. Significant interhemispheric asymmetry of any single electrode pair occurred in 55% of the 32 patients with known pathology, while the cumulative yield of all electrode pairs was over 80 percent. The diagnostic yield of individual electrode pairs was significantly different: the electrode pair placed over the temporo-parietal junction detected the highest number of abnormalities. The cumulative abnormality taken over all lateral electrode pairs could be described with a curve well fitted with a probability summation function. It is inferred that the contribution of several independent generator sources is reflected in the N70 of the pattern onset VEP. The results suggest that multichannel recording of the interhemispheric amplitude distribution of the N70 of the onset VEP is useful for the evaluation of paracentral visual field defects. |
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Interhemispheric amplitude difference of the N70 deflection was established across 6 homologous lateral electrode pairs in 15 normal controls and 32 patients with chiasmatic or retrochiasmatic cerebral lesions. Twenty-three of these had known homonymous or bitemporal field defects while 9 had normal fields on routine perimetry. Significant interhemispheric asymmetry of any single electrode pair occurred in 55% of the 32 patients with known pathology, while the cumulative yield of all electrode pairs was over 80 percent. The diagnostic yield of individual electrode pairs was significantly different: the electrode pair placed over the temporo-parietal junction detected the highest number of abnormalities. The cumulative abnormality taken over all lateral electrode pairs could be described with a curve well fitted with a probability summation function. It is inferred that the contribution of several independent generator sources is reflected in the N70 of the pattern onset VEP. The results suggest that multichannel recording of the interhemispheric amplitude distribution of the N70 of the onset VEP is useful for the evaluation of paracentral visual field defects.</description><identifier>ISSN: 0009-9155</identifier><identifier>ISSN: 1550-0594</identifier><identifier>EISSN: 2169-5202</identifier><identifier>DOI: 10.1177/155005940203300204</identifier><identifier>PMID: 12025733</identifier><language>eng</language><publisher>Los Angeles, CA: SAGE Publications</publisher><subject>Adult ; Analysis of Variance ; Asymmetry ; Automation ; Biological and medical sciences ; Brain Diseases - complications ; Cerebral hemispheres ; Defects ; Diseases of visual field, optic nerve, optic chiasma and optic tracts ; Electrodes ; Electroencephalography - instrumentation ; Electroencephalography - methods ; Evoked Potentials, Visual ; False Negative Reactions ; False Positive Reactions ; Homology ; Humans ; Lesions ; Magnetic fields ; Medical sciences ; Middle Aged ; Ophthalmology ; Pathology ; Patients ; Predictive Value of Tests ; Scalp ; Sensitivity and Specificity ; Topography ; Vision Disorders - diagnosis ; Vision Disorders - etiology ; Visual evoked potentials ; Visual field ; Visual Field Tests - methods ; Visual Fields</subject><ispartof>Clinical EEG and neuroscience, 2002-04, Vol.33 (2), p.62-69</ispartof><rights>2002 EEG and Clinical Neuroscience Society</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c397t-88a6bdfb261d95050de2af3a61bdaedb7dfca1764d88c4c92819ad527f34dace3</citedby><cites>FETCH-LOGICAL-c397t-88a6bdfb261d95050de2af3a61bdaedb7dfca1764d88c4c92819ad527f34dace3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/1988366051/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$H</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/1988366051?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,780,784,21389,21819,27924,27925,33530,43621,43622,43659,64385,64389,72469,74104</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=13618346$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12025733$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sartucci, Ferdinando</creatorcontrib><creatorcontrib>Tagliati, Michele</creatorcontrib><creatorcontrib>Mylin, Leland H.</creatorcontrib><creatorcontrib>Bodis-Wollner, Ivan</creatorcontrib><title>Topographical Analysis of the Onset VEP in the Detection of Paracentral Visual Field Defects</title><title>Clinical EEG and neuroscience</title><addtitle>Clin Electroencephalogr</addtitle><description>Transient visual evoked potentials (VEP) were recorded simultaneously from 16 electrodes evenly placed over posterior scalp locations covering the occipital, posterior parietal and temporal areas. Interhemispheric amplitude difference of the N70 deflection was established across 6 homologous lateral electrode pairs in 15 normal controls and 32 patients with chiasmatic or retrochiasmatic cerebral lesions. Twenty-three of these had known homonymous or bitemporal field defects while 9 had normal fields on routine perimetry. Significant interhemispheric asymmetry of any single electrode pair occurred in 55% of the 32 patients with known pathology, while the cumulative yield of all electrode pairs was over 80 percent. The diagnostic yield of individual electrode pairs was significantly different: the electrode pair placed over the temporo-parietal junction detected the highest number of abnormalities. The cumulative abnormality taken over all lateral electrode pairs could be described with a curve well fitted with a probability summation function. It is inferred that the contribution of several independent generator sources is reflected in the N70 of the pattern onset VEP. The results suggest that multichannel recording of the interhemispheric amplitude distribution of the N70 of the onset VEP is useful for the evaluation of paracentral visual field defects.</description><subject>Adult</subject><subject>Analysis of Variance</subject><subject>Asymmetry</subject><subject>Automation</subject><subject>Biological and medical sciences</subject><subject>Brain Diseases - complications</subject><subject>Cerebral hemispheres</subject><subject>Defects</subject><subject>Diseases of visual field, optic nerve, optic chiasma and optic tracts</subject><subject>Electrodes</subject><subject>Electroencephalography - instrumentation</subject><subject>Electroencephalography - methods</subject><subject>Evoked Potentials, Visual</subject><subject>False Negative Reactions</subject><subject>False Positive Reactions</subject><subject>Homology</subject><subject>Humans</subject><subject>Lesions</subject><subject>Magnetic fields</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Ophthalmology</subject><subject>Pathology</subject><subject>Patients</subject><subject>Predictive Value of Tests</subject><subject>Scalp</subject><subject>Sensitivity and Specificity</subject><subject>Topography</subject><subject>Vision Disorders - diagnosis</subject><subject>Vision Disorders - etiology</subject><subject>Visual evoked potentials</subject><subject>Visual field</subject><subject>Visual Field Tests - methods</subject><subject>Visual Fields</subject><issn>0009-9155</issn><issn>1550-0594</issn><issn>2169-5202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNp10EtLHTEUB_AgFr1Yv4CLMiC6m3qSTF5L8dEWBF1YV4Uhk4dG5s5cc2YWfntzvReUlm5ySPid5ORPyBGF75QqdUaFABCmAQacQ1mbHbJgVJpaMGC7ZAEApjaF7ZNDxGdY7xVQMHtknxYiFOcL8ud-XI2P2a6ekrN9dT7Y_hUTVmOspqdQ3Q4Ypurh6q5Kw_vBZZiCm9I4rMWdzdaFYcql8yHhXMp1Cr0vKhaFX8mXaHsMh9t6QH5fX91f_Kxvbn_8uji_qR03aqq1trLzsWOSeiNAgA_MRm4l7bwNvlM-OkuVbLzWrnGGaWqsF0xF3vgyAD8gp5t7V3l8mQNO7TKhC31vhzDO2CqqQEtJCzz-Cz6Pcy5_xpYarbmUINaKbZTLI2IOsV3ltLT5taXQrsNv_w2_NH3bXj13y-A_WrZRF3CyBRZL1DHbwSX8cFxSzRtZ3NnGoX0Mn-b7_9Nv0FqYFA</recordid><startdate>20020401</startdate><enddate>20020401</enddate><creator>Sartucci, Ferdinando</creator><creator>Tagliati, Michele</creator><creator>Mylin, Leland H.</creator><creator>Bodis-Wollner, Ivan</creator><general>SAGE Publications</general><general>ECNS</general><general>SAGE PUBLICATIONS, INC</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>7RV</scope><scope>7TK</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope></search><sort><creationdate>20020401</creationdate><title>Topographical Analysis of the Onset VEP in the Detection of Paracentral Visual Field Defects</title><author>Sartucci, Ferdinando ; Tagliati, Michele ; Mylin, Leland H. ; Bodis-Wollner, Ivan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c397t-88a6bdfb261d95050de2af3a61bdaedb7dfca1764d88c4c92819ad527f34dace3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Adult</topic><topic>Analysis of Variance</topic><topic>Asymmetry</topic><topic>Automation</topic><topic>Biological and medical sciences</topic><topic>Brain Diseases - complications</topic><topic>Cerebral hemispheres</topic><topic>Defects</topic><topic>Diseases of visual field, optic nerve, optic chiasma and optic tracts</topic><topic>Electrodes</topic><topic>Electroencephalography - instrumentation</topic><topic>Electroencephalography - methods</topic><topic>Evoked Potentials, Visual</topic><topic>False Negative Reactions</topic><topic>False Positive Reactions</topic><topic>Homology</topic><topic>Humans</topic><topic>Lesions</topic><topic>Magnetic fields</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Ophthalmology</topic><topic>Pathology</topic><topic>Patients</topic><topic>Predictive Value of Tests</topic><topic>Scalp</topic><topic>Sensitivity and Specificity</topic><topic>Topography</topic><topic>Vision Disorders - diagnosis</topic><topic>Vision Disorders - etiology</topic><topic>Visual evoked potentials</topic><topic>Visual field</topic><topic>Visual Field Tests - methods</topic><topic>Visual Fields</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sartucci, Ferdinando</creatorcontrib><creatorcontrib>Tagliati, Michele</creatorcontrib><creatorcontrib>Mylin, Leland H.</creatorcontrib><creatorcontrib>Bodis-Wollner, Ivan</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>Nursing & Allied Health Database</collection><collection>Neurosciences Abstracts</collection><collection>ProQuest Health and Medical</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>PML(ProQuest Medical Library)</collection><collection>Nursing & Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Clinical EEG and neuroscience</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sartucci, Ferdinando</au><au>Tagliati, Michele</au><au>Mylin, Leland H.</au><au>Bodis-Wollner, Ivan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Topographical Analysis of the Onset VEP in the Detection of Paracentral Visual Field Defects</atitle><jtitle>Clinical EEG and neuroscience</jtitle><addtitle>Clin Electroencephalogr</addtitle><date>2002-04-01</date><risdate>2002</risdate><volume>33</volume><issue>2</issue><spage>62</spage><epage>69</epage><pages>62-69</pages><issn>0009-9155</issn><issn>1550-0594</issn><eissn>2169-5202</eissn><abstract>Transient visual evoked potentials (VEP) were recorded simultaneously from 16 electrodes evenly placed over posterior scalp locations covering the occipital, posterior parietal and temporal areas. Interhemispheric amplitude difference of the N70 deflection was established across 6 homologous lateral electrode pairs in 15 normal controls and 32 patients with chiasmatic or retrochiasmatic cerebral lesions. Twenty-three of these had known homonymous or bitemporal field defects while 9 had normal fields on routine perimetry. Significant interhemispheric asymmetry of any single electrode pair occurred in 55% of the 32 patients with known pathology, while the cumulative yield of all electrode pairs was over 80 percent. The diagnostic yield of individual electrode pairs was significantly different: the electrode pair placed over the temporo-parietal junction detected the highest number of abnormalities. The cumulative abnormality taken over all lateral electrode pairs could be described with a curve well fitted with a probability summation function. It is inferred that the contribution of several independent generator sources is reflected in the N70 of the pattern onset VEP. The results suggest that multichannel recording of the interhemispheric amplitude distribution of the N70 of the onset VEP is useful for the evaluation of paracentral visual field defects.</abstract><cop>Los Angeles, CA</cop><pub>SAGE Publications</pub><pmid>12025733</pmid><doi>10.1177/155005940203300204</doi><tpages>8</tpages></addata></record> |
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subjects | Adult Analysis of Variance Asymmetry Automation Biological and medical sciences Brain Diseases - complications Cerebral hemispheres Defects Diseases of visual field, optic nerve, optic chiasma and optic tracts Electrodes Electroencephalography - instrumentation Electroencephalography - methods Evoked Potentials, Visual False Negative Reactions False Positive Reactions Homology Humans Lesions Magnetic fields Medical sciences Middle Aged Ophthalmology Pathology Patients Predictive Value of Tests Scalp Sensitivity and Specificity Topography Vision Disorders - diagnosis Vision Disorders - etiology Visual evoked potentials Visual field Visual Field Tests - methods Visual Fields |
title | Topographical Analysis of the Onset VEP in the Detection of Paracentral Visual Field Defects |
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