Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia

Lade...
Vorschaubild
Dateien
Popov_257917.pdf
Popov_257917.pdfGröße: 386.05 KBDownloads: 425
Datum
2014
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Übungsinduzierte cerebrale Reorganisation bei Schizophrenien
Open Access-Veröffentlichung
Open Access Green
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Cognitive, Affective, & Behavioral Neuroscience. 2014, 14(1), pp. 364-377. ISSN 1530-7026. eISSN 1531-135X. Available under: doi: 10.3758/s13415-013-0194-2
Zusammenfassung

Impaired facial affect recognition is characteristic of schizophrenia and has been related to impaired social function, but the relevant neural mechanisms have not been fully identified. The present study sought to identify the role of oscillatory alpha activity in that deficit during the process of facial emotion recognition. Neuromagnetic brain activity was monitored while 44 schizophrenia patients and 44 healthy controls viewed 5-s videos showing human faces gradually changing from neutral to fearful or happy expressions or from the neutral face of one poser to the neutral face of another. Recognition performance was determined separately by self-report. Relative to prestimulus baseline, controls exhibited a 10- to 15-Hz power increase prior to full recognition and a 10- to 15-Hz power decrease during the postrecognition phase. These results support recent proposals about the function of alpha-band oscillations in normal stimulus evaluation. The patients failed to show this sequence of alpha power increase and decrease and also showed low 10- to 15-Hz power and high 10- to 15-Hz connectivity during the prestimulus baseline. In light of the proposal that a combination of alpha power increase and functional disconnection facilitates information intake and processing, the finding of an abnormal association of low baseline alpha power and high connectivity in schizophrenia suggests a state of impaired readiness that fosters abnormal dynamics during facial affect recognition.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
150 Psychologie
Schlagwörter
Schizophrenia, Facial affect recognition, Alpha oscillations, Emotion, Event processing, Functional connectivity, Neural networks
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690POPOV, Tzvetan G., Brigitte ROCKSTROH, Petia POPOVA, Almut CAROLUS, Gregory A. MILLER, 2014. Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia. In: Cognitive, Affective, & Behavioral Neuroscience. 2014, 14(1), pp. 364-377. ISSN 1530-7026. eISSN 1531-135X. Available under: doi: 10.3758/s13415-013-0194-2
BibTex
@article{Popov2014-03Dynam-25791,
  year={2014},
  doi={10.3758/s13415-013-0194-2},
  title={Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia},
  number={1},
  volume={14},
  issn={1530-7026},
  journal={Cognitive, Affective, & Behavioral Neuroscience},
  pages={364--377},
  author={Popov, Tzvetan G. and Rockstroh, Brigitte and Popova, Petia and Carolus, Almut and Miller, Gregory A.}
}
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/123456789/25791">
    <dc:contributor>Rockstroh, Brigitte</dc:contributor>
    <dc:contributor>Popova, Petia</dc:contributor>
    <dc:creator>Popova, Petia</dc:creator>
    <dc:creator>Rockstroh, Brigitte</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/25791"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-01-20T08:46:32Z</dc:date>
    <dcterms:bibliographicCitation>Cognitive, Affective, &amp; Behavioral Neuroscience ; 14 (2014), 1. - S. 364-377</dcterms:bibliographicCitation>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/43"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-01-20T08:46:32Z</dcterms:available>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/43"/>
    <dc:contributor>Miller, Gregory A.</dc:contributor>
    <dc:contributor>Carolus, Almut</dc:contributor>
    <dc:creator>Miller, Gregory A.</dc:creator>
    <dc:language>eng</dc:language>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Carolus, Almut</dc:creator>
    <dcterms:title>Dynamics of alpha oscillations elucidate facial affect recognition in schizophrenia</dcterms:title>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/25791/2/Popov_257917.pdf"/>
    <dc:rights>terms-of-use</dc:rights>
    <dc:creator>Popov, Tzvetan G.</dc:creator>
    <dc:contributor>Popov, Tzvetan G.</dc:contributor>
    <dcterms:abstract xml:lang="eng">Impaired facial affect recognition is characteristic of schizophrenia and has been related to impaired social function, but the relevant neural mechanisms have not been fully identified. The present study sought to identify the role of oscillatory alpha activity in that deficit during the process of facial emotion recognition. Neuromagnetic brain activity was monitored while 44 schizophrenia patients and 44 healthy controls viewed 5-s videos showing human faces gradually changing from neutral to fearful or happy expressions or from the neutral face of one poser to the neutral face of another. Recognition performance was determined separately by self-report. Relative to prestimulus baseline, controls exhibited a 10- to 15-Hz power increase prior to full recognition and a 10- to 15-Hz power decrease during the postrecognition phase. These results support recent proposals about the function of alpha-band oscillations in normal stimulus evaluation. The patients failed to show this sequence of alpha power increase and decrease and also showed low 10- to 15-Hz power and high 10- to 15-Hz connectivity during the prestimulus baseline. In light of the proposal that a combination of alpha power increase and functional disconnection facilitates information intake and processing, the finding of an abnormal association of low baseline alpha power and high connectivity in schizophrenia suggests a state of impaired readiness that fosters abnormal dynamics during facial affect recognition.</dcterms:abstract>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/25791/2/Popov_257917.pdf"/>
    <dcterms:issued>2014-03</dcterms:issued>
  </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
Ja
Begutachtet
Diese Publikation teilen