The Tactile Window to Consciousness is Characterized by Frequency-Specific Integration and Segregation of the Primary Somatosensory Cortex

Frey, Julia Natascha; Ruhnau, Philipp; Leske, Sabine; Siegel, Markus; Braun, Christoph; Weisz, Nathan

The Tactile Window to Consciousness is Characterized by Frequency-Specific Integration and Segregation of the Primary Somatosensory Cortex

Dateien

Frey_0-323849.pdfGröße: 567.67 KBDownloads: 275

Datum

2016

Autor:innen

Frey, Julia Natascha

Ruhnau, Philipp

Leske, Sabine

Siegel, Markus

Braun, Christoph

Weisz, Nathan

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Scientific Reports. 2016, 6, 20805. eISSN 2045-2322. Available under: doi: 10.1038/srep20805

Zusammenfassung

We recently proposed that besides levels of local cortical excitability, also distinct pre-stimulus network states (windows to consciousness) determine whether a near-threshold stimulus will be consciously perceived. In the present magnetoencephalography study, we scrutinised these pre-stimulus network states with a focus on the primary somatosensory cortex. For this purpose participants performed a simple near-threshold tactile detection task. Confirming previous studies, we found reduced alpha and beta power in the somatosensory region contralateral to stimulation prior to correct stimulus detection as compared to undetected stimuli, and stronger event-related responses following successful stimulus detection. As expected, using graph theoretical measures, we also observed modulated pre-stimulus network level integration. Specifically, the right primary somatosensory cortex contralateral to stimulation showed an increased integration in the theta band, and additionally, a decreased integration in the beta band. Overall, these results underline the importance of network states for enabling conscious perception. Moreover, they indicate that also a reduction of irrelevant functional connections contributes to the window to consciousness by tuning pre-stimulus pathways of information flow.

Fachgebiet (DDC)

150 Psychologie

Zitieren

ISO 690

FREY, Julia Natascha, Philipp RUHNAU, Sabine LESKE, Markus SIEGEL, Christoph BRAUN, Nathan WEISZ, 2016. The Tactile Window to Consciousness is Characterized by Frequency-Specific Integration and Segregation of the Primary Somatosensory Cortex. In: Scientific Reports. 2016, 6, 20805. eISSN 2045-2322. Available under: doi: 10.1038/srep20805

BibTex

@article{Frey2016Tacti-33642,
  year={2016},
  doi={10.1038/srep20805},
  title={The Tactile Window to Consciousness is Characterized by Frequency-Specific Integration and Segregation of the Primary Somatosensory Cortex},
  volume={6},
  journal={Scientific Reports},
  author={Frey, Julia Natascha and Ruhnau, Philipp and Leske, Sabine and Siegel, Markus and Braun, Christoph and Weisz, Nathan},
  note={Article Number: 20805}
}

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Universitätsbibliographie

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