The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error
Identifieur interne : 001792 ( Istex/Corpus ); précédent : 001791; suivant : 001793The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error
Auteurs : Ewald Naumann ; Christine Huber ; Stefanie Maier ; Werner Plihal ; Andrea Wustmans ; Oliver Diedrich ; Dieter BartussekSource :
- Electroencephalography and Clinical Neurophysiology [ 0013-4694 ] ; 1992.
Abstract
This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.
Url:
DOI: 10.1016/0013-4694(92)90119-3
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University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Plihal, Werner" sort="Plihal, Werner" uniqKey="Plihal W" first="Werner" last="Plihal">Werner Plihal</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Wustmans, Andrea" sort="Wustmans, Andrea" uniqKey="Wustmans A" first="Andrea" last="Wustmans">Andrea Wustmans</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Diedrich, Oliver" sort="Diedrich, Oliver" uniqKey="Diedrich O" first="Oliver" last="Diedrich">Oliver Diedrich</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Bartussek, Dieter" sort="Bartussek, Dieter" 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Ewald" uniqKey="Naumann E" first="Ewald" last="Naumann">Ewald Naumann</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Huber, Christine" sort="Huber, Christine" uniqKey="Huber C" first="Christine" last="Huber">Christine Huber</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Maier, Stefanie" sort="Maier, Stefanie" uniqKey="Maier S" first="Stefanie" last="Maier">Stefanie Maier</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Plihal, Werner" sort="Plihal, Werner" uniqKey="Plihal W" first="Werner" last="Plihal">Werner Plihal</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Wustmans, Andrea" sort="Wustmans, Andrea" uniqKey="Wustmans A" first="Andrea" last="Wustmans">Andrea Wustmans</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Diedrich, Oliver" sort="Diedrich, Oliver" uniqKey="Diedrich O" first="Oliver" last="Diedrich">Oliver Diedrich</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author><author><name sortKey="Bartussek, Dieter" sort="Bartussek, Dieter" uniqKey="Bartussek D" first="Dieter" last="Bartussek">Dieter Bartussek</name><affiliation><mods:affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Electroencephalography and Clinical Neurophysiology</title><title level="j" type="abbrev">EEG</title><idno type="ISSN">0013-4694</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">83</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="254">254</biblScope><biblScope unit="page" to="264">264</biblScope></imprint><idno type="ISSN">0013-4694</idno></series><idno type="istex">C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B</idno><idno type="DOI">10.1016/0013-4694(92)90119-3</idno><idno type="PII">0013-4694(92)90119-3</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0013-4694</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Ewald Naumann</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Christine Huber</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Stefanie Maier</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Werner Plihal</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Andrea Wustmans</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Oliver Diedrich</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item><json:item><name>Dieter Bartussek</name><affiliations><json:string>Department of Psychology, University of Trier, D-W-5500 Trier Germany</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Event-related potential</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>P3 component</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Modality</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Normalization</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Type II error</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.</abstract><qualityIndicators><score>7.436</score><pdfVersion>1.2</pdfVersion><pdfPageSize>576 x 792 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>5</keywordCount><abstractCharCount>1290</abstractCharCount><pdfWordCount>7690</pdfWordCount><pdfCharCount>39036</pdfCharCount><pdfPageCount>11</pdfPageCount><abstractWordCount>203</abstractWordCount></qualityIndicators><title>The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</title><pii><json:string>0013-4694(92)90119-3</json:string></pii><refBibs><json:item><author><json:item><name>G. Barrett</name></json:item><json:item><name>R. Neshige</name></json:item><json:item><name>H. 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Statist.</title></host><title>Error probabilities in educational and psychological research</title></json:item></refBibs><genre><json:string>research-article</json:string></genre><serie><volume>Vol. II</volume><pages><last>138</last><first>69</first></pages><language><json:string>unknown</json:string></language><title>Advances in Psychophysiology</title></serie><host><volume>83</volume><pii><json:string>S0013-4694(00)X0296-9</json:string></pii><pages><last>264</last><first>254</first></pages><issn><json:string>0013-4694</json:string></issn><issue>4</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><title>Electroencephalography and Clinical Neurophysiology</title><publicationDate>1992</publicationDate></host><publicationDate>1992</publicationDate><copyrightDate>1992</copyrightDate><doi><json:string>10.1016/0013-4694(92)90119-3</json:string></doi><id>C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B</id><score>1.9282402</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1992</date></publicationStmt><notesStmt><note type="content">Section title: Main article</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</title><author xml:id="author-1"><persName><forename type="first">Ewald</forename><surname>Naumann</surname></persName><note type="correspondence"><p>Correspondence to: Dr. Ewald Naumann, University of Trier, FB I-Psychology, P.O. Box 3825, D-W-550 Trier Germany. Tel.: 0651/2012939; Fax: 0651/2012934.</p></note><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-2"><persName><forename type="first">Christine</forename><surname>Huber</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-3"><persName><forename type="first">Stefanie</forename><surname>Maier</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">Werner</forename><surname>Plihal</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-5"><persName><forename type="first">Andrea</forename><surname>Wustmans</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-6"><persName><forename type="first">Oliver</forename><surname>Diedrich</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author><author xml:id="author-7"><persName><forename type="first">Dieter</forename><surname>Bartussek</surname></persName><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation></author></analytic><monogr><title level="j">Electroencephalography and Clinical Neurophysiology</title><title level="j" type="abbrev">EEG</title><idno type="pISSN">0013-4694</idno><idno type="PII">S0013-4694(00)X0296-9</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992"></date><biblScope unit="volume">83</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="254">254</biblScope><biblScope unit="page" to="264">264</biblScope></imprint></monogr><idno type="istex">C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B</idno><idno type="DOI">10.1016/0013-4694(92)90119-3</idno><idno type="PII">0013-4694(92)90119-3</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1992</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.</p></abstract><textClass><keywords scheme="keyword"><list><head>Keywords</head><item><term>Event-related potential</term></item><item><term>P3 component</term></item><item><term>Modality</term></item><item><term>Normalization</term></item><item><term>Type II error</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1992">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>EEG</jid><aid>92901193</aid><ce:pii>0013-4694(92)90119-3</ce:pii><ce:doi>10.1016/0013-4694(92)90119-3</ce:doi><ce:copyright type="unknown" year="1992"></ce:copyright></item-info><head><ce:dochead><ce:textfn>Main article</ce:textfn></ce:dochead><ce:title>The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</ce:title><ce:author-group><ce:author><ce:given-name>Ewald</ce:given-name><ce:surname>Naumann</ce:surname><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Christine</ce:given-name><ce:surname>Huber</ce:surname></ce:author><ce:author><ce:given-name>Stefanie</ce:given-name><ce:surname>Maier</ce:surname></ce:author><ce:author><ce:given-name>Werner</ce:given-name><ce:surname>Plihal</ce:surname></ce:author><ce:author><ce:given-name>Andrea</ce:given-name><ce:surname>Wustmans</ce:surname></ce:author><ce:author><ce:given-name>Oliver</ce:given-name><ce:surname>Diedrich</ce:surname></ce:author><ce:author><ce:given-name>Dieter</ce:given-name><ce:surname>Bartussek</ce:surname></ce:author><ce:affiliation><ce:textfn>Department of Psychology, University of Trier, D-W-5500 Trier Germany</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Correspondence to: Dr. Ewald Naumann, University of Trier, FB I-Psychology, P.O. Box 3825, D-W-550 Trier Germany. Tel.: 0651/2012939; Fax: 0651/2012934.</ce:text></ce:correspondence></ce:author-group><ce:date-accepted day="27" month="4" year="1992"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>Event-related potential</ce:text></ce:keyword><ce:keyword><ce:text>P3 component</ce:text></ce:keyword><ce:keyword><ce:text>Modality</ce:text></ce:keyword><ce:keyword><ce:text>Normalization</ce:text></ce:keyword><ce:keyword><ce:text>Type II error</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>The scalp topography of P300 in the visual and auditory modalities: a comparison of three normalization methods and the control of statistical type II error</title></titleInfo><name type="personal"><namePart type="given">Ewald</namePart><namePart type="family">Naumann</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><description>Correspondence to: Dr. Ewald Naumann, University of Trier, FB I-Psychology, P.O. Box 3825, D-W-550 Trier Germany. Tel.: 0651/2012939; Fax: 0651/2012934.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Christine</namePart><namePart type="family">Huber</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Stefanie</namePart><namePart type="family">Maier</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Werner</namePart><namePart type="family">Plihal</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Andrea</namePart><namePart type="family">Wustmans</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Oliver</namePart><namePart type="family">Diedrich</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Dieter</namePart><namePart type="family">Bartussek</namePart><affiliation>Department of Psychology, University of Trier, D-W-5500 Trier Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1992</dateIssued><copyrightDate encoding="w3cdtf">1992</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">This study was designed to replicate recent findings suggesting that the P3 component of the event-related potential is dependent on the modality of the eliciting stimulus. When assessing this research hypothesis two methodological problems are of special interest: first, the amplitudes have to be normalized, due to problems with the modelof the analysis of variance; second, special care has to be taken regarding the β error, which is the probability of falsely accepting the null hypothesis of a statistical test. A possible modality independence is associated with the acceptance of a null hypothesis. The first problem was assessed by using different normalization procedures and comparing their results. The second was solved by controlling the β error. Results for P3 amplitudes from two sessions in which 61 subjects performed in each session an auditory and a visual oddball task (EEG measured at 11 locations) showed no influence of modality on the P3 elicited by the rare, task relevant, stimulus. Influences of modality were observed for the P3 elicited by the frequent stimulus. As it is quite unlikely that P3 generating sources are strongly active during the processing of the frequent stimulus, this effect is possibly due to a component overlap from the vertex potential.</abstract><note type="content">Section title: Main article</note><subject><genre>Keywords</genre><topic>Event-related potential</topic><topic>P3 component</topic><topic>Modality</topic><topic>Normalization</topic><topic>Type II error</topic></subject><relatedItem type="host"><titleInfo><title>Electroencephalography and Clinical Neurophysiology</title></titleInfo><titleInfo type="abbreviated"><title>EEG</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">199210</dateIssued></originInfo><identifier type="ISSN">0013-4694</identifier><identifier type="PII">S0013-4694(00)X0296-9</identifier><part><date>199210</date><detail type="volume"><number>83</number><caption>vol.</caption></detail><detail type="issue"><number>4</number><caption>no.</caption></detail><extent unit="issue pages"><start>P55</start><end>P88</end></extent><extent unit="issue pages"><start>229</start><end>270</end></extent><extent unit="pages"><start>254</start><end>264</end></extent></part></relatedItem><identifier type="istex">C5AF946D1AFD292EC1A8B7C87C04D784A17BE75B</identifier><identifier type="DOI">10.1016/0013-4694(92)90119-3</identifier><identifier type="PII">0013-4694(92)90119-3</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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