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 : 002D19 ( Main/Exploration ); précédent : 002D18; suivant : 002D20The 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 [Allemagne] ; Christine Huber [Allemagne] ; Stefanie Maier [Allemagne] ; Werner Plihal [Allemagne] ; Andrea Wustmans [Allemagne] ; Oliver Diedrich [Allemagne] ; Dieter Bartussek [Allemagne]Source :
- Electroencephalography and Clinical Neurophysiology [ 0013-4694 ] ; 1992.
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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.
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DOI: 10.1016/0013-4694(92)90119-3
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Mapping</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Electroencephalography</term><term>Evoked Potentials, Auditory</term><term>Evoked Potentials, Visual</term><term>Female</term><term>Humans</term><term>Male</term></keywords></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><affiliations><list><country><li>Allemagne</li></country><region><li>Rhénanie-Palatinat</li></region><settlement><li>Trèves (Allemagne)</li></settlement><orgName><li>Université de Trèves</li></orgName></list><tree><country name="Allemagne"><region name="Rhénanie-Palatinat"><name sortKey="Naumann, Ewald" sort="Naumann, Ewald" uniqKey="Naumann E" first="Ewald" last="Naumann">Ewald Naumann</name></region><name sortKey="Bartussek, Dieter" sort="Bartussek, Dieter" uniqKey="Bartussek D" first="Dieter" last="Bartussek">Dieter Bartussek</name><name sortKey="Diedrich, Oliver" sort="Diedrich, Oliver" uniqKey="Diedrich O" first="Oliver" last="Diedrich">Oliver Diedrich</name><name sortKey="Huber, Christine" sort="Huber, Christine" uniqKey="Huber C" first="Christine" last="Huber">Christine Huber</name><name sortKey="Maier, Stefanie" sort="Maier, Stefanie" uniqKey="Maier S" first="Stefanie" last="Maier">Stefanie Maier</name><name sortKey="Plihal, Werner" sort="Plihal, Werner" uniqKey="Plihal W" first="Werner" last="Plihal">Werner Plihal</name><name sortKey="Wustmans, Andrea" sort="Wustmans, Andrea" uniqKey="Wustmans A" first="Andrea" last="Wustmans">Andrea Wustmans</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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