Johnson, JF;
Belyk, M;
Schwartze, M;
Pinheiro, AP;
Kotz, SA;
(2021)
Expectancy changes the self-monitoring of voice identity.
European Journal of Neuroscience
, 53
(8)
pp. 2681-2695.
10.1111/ejn.15162.
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Abstract
Self‐voice attribution can become difficult when voice characteristics are ambiguous, but functional magnetic resonance imaging (fMRI) investigations of such ambiguity are sparse. We utilized voice‐morphing (self‐other) to manipulate (un‐)certainty in self‐voice attribution in a button‐press paradigm. This allowed investigating how levels of self‐voice certainty alter brain activation in brain regions monitoring voice identity and unexpected changes in voice playback quality. FMRI results confirmed a self‐voice suppression effect in the right anterior superior temporal gyrus (aSTG) when self‐voice attribution was unambiguous. Although the right inferior frontal gyrus (IFG) was more active during a self‐generated compared to a passively‐heard voice, the putative role of this region in detecting unexpected self‐voice changes during action was demonstrated only when hearing the voice of another speaker and not when attribution was uncertain. Further research on the link between right aSTG and IFG is required and may establish a threshold monitoring voice identity in action. The current results have implications for a better understanding of the altered experience of self‐voice feedback in auditory verbal hallucinations.
Type: | Article |
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Title: | Expectancy changes the self-monitoring of voice identity |
Location: | France |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1111/ejn.15162 |
Publisher version: | https://doi.org/10.1111/ejn.15162 |
Language: | English |
Additional information: | This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. See: https://creativecommons.org/licenses/by-nc/4.0/ |
Keywords: | Auditory feedback, Motor-induced suppression, Source attribution, Voice morphing, fMRI |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Speech, Hearing and Phonetic Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/10123793 |
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