16
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Spectral fingerprints of large‐scale cortical dynamics during ambiguous motion perception

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Ambiguous stimuli have been widely used to study the neuronal correlates of consciousness. Recently, it has been suggested that conscious perception might arise from the dynamic interplay of functionally specialized but widely distributed cortical areas. While previous research mainly focused on phase coupling as a correlate of cortical communication, more recent findings indicated that additional coupling modes might coexist and possibly subserve distinct cortical functions. Here, we studied two coupling modes, namely phase and envelope coupling, which might differ in their origins, putative functions and dynamics. Therefore, we recorded 128‐channel EEG while participants performed a bistable motion task and utilized state‐of‐the‐art source‐space connectivity analysis techniques to study the functional relevance of different coupling modes for cortical communication. Our results indicate that gamma‐band phase coupling in extrastriate visual cortex might mediate the integration of visual tokens into a moving stimulus during ambiguous visual stimulation. Furthermore, our results suggest that long‐range fronto‐occipital gamma‐band envelope coupling sustains the horizontal percept during ambiguous motion perception. Additionally, our results support the idea that local parieto‐occipital alpha‐band phase coupling controls the inter‐hemispheric information transfer. These findings provide correlative evidence for the notion that synchronized oscillatory brain activity reflects the processing of sensory input as well as the information integration across several spatiotemporal scales. The results indicate that distinct coupling modes are involved in different cortical computations and that the rich spatiotemporal correlation structure of the brain might constitute the functional architecture for cortical processing and specific multi‐site communication. Hum Brain Mapp 37:4099–4111, 2016. © 2016 Wiley Periodicals, Inc.

          Related collections

          Author and article information

          Contributors
          r.helfrich@uke.de
          Journal
          Hum Brain Mapp
          Hum Brain Mapp
          10.1002/(ISSN)1097-0193
          HBM
          Human Brain Mapping
          John Wiley and Sons Inc. (Hoboken )
          1065-9471
          1097-0193
          06 October 2016
          November 2016
          : 37
          : 11 ( doiID: 10.1002/hbm.v37.11 )
          : 4099-4111
          Affiliations
          [ 1 ] Department of Neurophysiology and Pathophysiology University Medical Center Hamburg‐Eppendorf Hamburg 20246 Germany
          [ 2 ] Helen Wills Neuroscience Institute University of California Berkeley Berkeley California
          [ 3 ] Institute of Cognitive Science University of Osnabrück Osnabrück 49069 Germany
          Author notes
          [* ]Correspondence to: Randolph F. Helfrich; Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg‐Eppendorf, 20246 Hamburg, Germany. E‐mail: r.helfrich@ 123456uke.de
          [†]

          Randolph F. Helfrich and Hannah Knepper contributed equally to this work.

          Article
          PMC6867507 PMC6867507 6867507 HBM23298
          10.1002/hbm.23298
          6867507
          27347668
          © 2016 Wiley Periodicals, Inc.
          Page count
          Figures: 4, Tables: 0, Pages: 13, Words: 8451
          Categories
          Research Article
          Research Articles
          Custom metadata
          2.0
          November 2016
          Converter:WILEY_ML3GV2_TO_JATSPMC version:5.7.2 mode:remove_FC converted:15.11.2019

          Comments

          Comment on this article