Listen to Yourself : The Medial Prefrontal Cortex Modulates Auditory Alpha Power During Speech Preparation

Müller, Nadia; Leske, Sabine; Hartmann, Thomas; Szebényi, Szabolcs; Weisz, Nathan

Listen to Yourself : The Medial Prefrontal Cortex Modulates Auditory Alpha Power During Speech Preparation

Dateien

Mueller_0-317629.pdfGröße: 294.85 KBDownloads: 241

Datum

2015

Autor:innen

Szebényi, Szabolcs

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Cerebral Cortex. 2015, 25(11), pp. 4029-4037. ISSN 1047-3211. eISSN 1460-2199. Available under: doi: 10.1093/cercor/bhu117

Zusammenfassung

How do we process stimuli that stem from the external world and stimuli that are self-generated? In the case of voice perception it has been shown that evoked activity elicited by self-generated sounds is suppressed compared with the same sounds played-back externally. We here wanted to reveal whether neural excitability of the auditory cortex-putatively reflected in local alpha band power--is modulated already prior to speech onset, and which brain regions may mediate such a top-down preparatory response. In the left auditory cortex we show that the typical alpha suppression found when participants prepare to listen disappears when participants expect a self-spoken sound. This suggests an inhibitory adjustment of auditory cortical activity already before sound onset. As a second main finding we demonstrate that the medial prefrontal cortex, a region known for self-referential processes, mediates these condition-specific alpha power modulations. This provides crucial insights into how higher-order regions prepare the auditory cortex for the processing of self-generated sounds. Furthermore, the mechanism outlined could provide further explanations to self-referential phenomena, such as "tickling yourself". Finally, it has implications for the so-far unsolved question of how auditory alpha power is mediated by higher-order regions in a more general sense.

Fachgebiet (DDC)

150 Psychologie

Schlagwörter

effective connectivity, efference copy, MEG, oscillation, top-down

Zitieren

ISO 690

MÜLLER, Nadia, Sabine LESKE, Thomas HARTMANN, Szabolcs SZEBÉNYI, Nathan WEISZ, 2015. Listen to Yourself : The Medial Prefrontal Cortex Modulates Auditory Alpha Power During Speech Preparation. In: Cerebral Cortex. 2015, 25(11), pp. 4029-4037. ISSN 1047-3211. eISSN 1460-2199. Available under: doi: 10.1093/cercor/bhu117

BibTex

@article{Muller2015Liste-33183,
  year={2015},
  doi={10.1093/cercor/bhu117},
  title={Listen to Yourself : The Medial Prefrontal Cortex Modulates Auditory Alpha Power During Speech Preparation},
  number={11},
  volume={25},
  issn={1047-3211},
  journal={Cerebral Cortex},
  pages={4029--4037},
  author={Müller, Nadia and Leske, Sabine and Hartmann, Thomas and Szebényi, Szabolcs and Weisz, Nathan}
}

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Universitätsbibliographie

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