Publikation:

The Separation of Overlapping Neuromagnetic Sources in First and Second Somatosensory Cortices

Lade...
Vorschaubild

Dateien

Elbert_1995_The_Separation.pdf
Elbert_1995_The_Separation.pdfGröße: 522.8 KBDownloads: 398

Datum

1995

Autor:innen

Junghöfer, Markus
Scholz, B.
Schneider, Siegfried

Herausgeber:innen

Kontakt

ISSN der Zeitschrift

Electronic ISSN

ISBN

Bibliografische Daten

Verlag

Schriftenreihe

Auflagebezeichnung

DOI (zitierfähiger Link)
ArXiv-ID

Internationale Patentnummer

Angaben zur Forschungsförderung

Projekt

Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Brain Topography. 1995, 7(4), pp. 275-282. Available under: doi: 10.1007/BF01195253

Zusammenfassung

In response to a somatosensory stimulus, two cortical centers in each hemisphere produce neural mass activity large enough to be detected with electric (EEG) or magnetic (MEG) measurements. Both the primary somatosensory cortex (S-I), located in the postcentral sulcus and in the depths of the central sulcus, as well as the secondary somatic sensory cortex (S-II), lying in the upper bank of the Sylvian fissure, respond within the first 100ms such that the two activities overlap in time. We demonstrate that this overlap can be disentangled using a MUSIC-type approach, as suggested by Oppelt and Scholz. It needs no a priori information about the sources. As the results show, there are several instances in time in which only one of the two centers (SI, SII) is active. It is only for these time segments that a single moving dipole yields meaningful results. Such time intervals occur during the upstroke of the late component around 60 ms (only SI activity) and during the down-stroke around 120 ms (only SII activity). In these time intervals the activity of one of the somatosensory areas is still large enough, while the other center is not yet or is no longer active.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
150 Psychologie

Schlagwörter

MEG, Somatosensory cortex, Source modeling, MUSIC, Event-related field

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690ELBERT, Thomas, Markus JUNGHÖFER, B. SCHOLZ, Siegfried SCHNEIDER, 1995. The Separation of Overlapping Neuromagnetic Sources in First and Second Somatosensory Cortices. In: Brain Topography. 1995, 7(4), pp. 275-282. Available under: doi: 10.1007/BF01195253
BibTex
@article{Elbert1995Separ-10110,
  year={1995},
  doi={10.1007/BF01195253},
  title={The Separation of Overlapping Neuromagnetic Sources in First and Second Somatosensory Cortices},
  number={4},
  volume={7},
  journal={Brain Topography},
  pages={275--282},
  author={Elbert, Thomas and Junghöfer, Markus and Scholz, B. and Schneider, Siegfried}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/10110">
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-25T09:14:13Z</dcterms:available>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/>
    <dc:creator>Schneider, Siegfried</dc:creator>
    <dc:contributor>Junghöfer, Markus</dc:contributor>
    <dc:creator>Elbert, Thomas</dc:creator>
    <dc:contributor>Elbert, Thomas</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/43"/>
    <dcterms:issued>1995</dcterms:issued>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/10110/1/Elbert_1995_The_Separation.pdf"/>
    <dc:contributor>Scholz, B.</dc:contributor>
    <dcterms:abstract xml:lang="eng">In response to a somatosensory stimulus, two cortical centers in each hemisphere produce neural mass activity large enough to be detected with electric (EEG) or magnetic (MEG) measurements. Both the primary somatosensory cortex (S-I), located in the postcentral sulcus and in the depths of the central sulcus, as well as the secondary somatic sensory cortex (S-II), lying in the upper bank of the Sylvian fissure, respond within the first 100ms such that the two activities overlap in time. We demonstrate that this overlap can be disentangled using a MUSIC-type approach, as suggested by Oppelt and Scholz. It needs no a priori information about the sources. As the results show, there are several instances in time in which only one of the two centers (SI, SII) is active. It is only for these time segments that a single moving dipole yields meaningful results. Such time intervals occur during the upstroke of the late component around 60 ms (only SI activity) and during the down-stroke around 120 ms (only SII activity). In these time intervals the activity of one of the somatosensory areas is still large enough, while the other center is not yet or is no longer active.</dcterms:abstract>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-25T09:14:13Z</dc:date>
    <dcterms:title>The Separation of Overlapping Neuromagnetic Sources in First and Second Somatosensory Cortices</dcterms:title>
    <dc:language>eng</dc:language>
    <dc:format>application/pdf</dc:format>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/43"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/10110/1/Elbert_1995_The_Separation.pdf"/>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/10110"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Schneider, Siegfried</dc:contributor>
    <dc:creator>Junghöfer, Markus</dc:creator>
    <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights>
    <dc:creator>Scholz, B.</dc:creator>
    <dcterms:bibliographicCitation>First publ. in: Brain Topography 7 (1995), 4, pp. 275-282</dcterms:bibliographicCitation>
  </rdf:Description>
</rdf:RDF>

Interner Vermerk

xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter

Kontakt
URL der Originalveröffentl.

Prüfdatum der URL

Prüfungsdatum der Dissertation

Finanzierungsart

Kommentar zur Publikation

Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Nein
Begutachtet
Diese Publikation teilen