Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Predicting perceptual suppression from local field potential in visual cortex

Zhang, H., Logothetis, N., & Liang, H. (2009). Predicting perceptual suppression from local field potential in visual cortex. In 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (pp. 6802-6805). Piscataway, NJ, USA: IEEE.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Konferenzbeitrag

Externe Referenzen

einblenden:
ausblenden:
Beschreibung:
-
OA-Status:

Urheber

einblenden:
ausblenden:
 Urheber:
Zhang, H, Autor
Logothetis, NK1, 2, Autor           
Liang, H, Autor
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Generalized flash suppression (GFS, Wilke et al. 2003) in which a salient visual stimulus can be rendered invisible despite continuous retinal input has provided a powerful means to study neural processes directly related to perception. However, the mechanisms underlying such perceptual suppression remain poorly understood. Here we asked how reliably the population responses could determine the perceptual states and what the roles of different areas in visual cortex played during suppression. Three monkeys were trained to perform the GFS task. Multi-channel neural activities in visual cortical areas V1, V2 and V4 were simultaneously recorded. Linear regression analysis on the time-frequency distributions of local field potential (LFP) recordings between two perceptual states (visible vs. invisible) showed that the significant power difference existed between the two perceptual states at the beta frequency band of 10-30 Hz. Linear discriminant analysis (LDA) classifiers were implemented to decipher perceptual states. Our results showed that LFP recordings provided significantly better prediction than the chance level, and the beta band signal provided better prediction than the broad band in all the three visual cortical areas. Broad band signal provided more accurate prediction in V4 than in V2 and V1, while the beta band signal provided consistently good predictions in V1, V2 and V4. Furthermore, multi-channel recordings were more informative than single electrode recordings in V1, V2 and V4, while in V1 and V4 the benefit of decoding population activity was significant. Channel-wise correlations limited the benefits of population activity. These results indicated that considerable information was retained in the beta band of the local field potential. The benefits of population activity were explored and the different roles of different visual cortical areas during perceptual suppression were investigated.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2009-09
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1109/IEMBS.2009.5333977
 Art des Abschluß: -

Veranstaltung

einblenden:
ausblenden:
Titel: 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2009)
Veranstaltungsort: Minneapolis, MN, USA
Start-/Enddatum: 2009-09-03 - 2009-09-06

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Piscataway, NJ, USA : IEEE
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: 6802 - 6805 Identifikator: ISBN: 978-1-4244-3296-7