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Cerebellar and Cortical Correlates of Internal and External Speech Error Monitoring

Abstract : An event-related functional magnetic resonance imaging study examined how speakers inspect their own speech for errors. Concretely, we sought to assess 1) the role of the temporal cortex in monitoring speech errors, linked with comprehension-based monitoring; 2) the involvement of the cerebellum in internal and external monitoring, linked with forward modeling; and 3) the role of the medial frontal cortex for internal monitoring, linked with conf lict-based monitoring. In a word production task priming speech errors, we observed enhanced involvement of the right posterior cerebellum for trials that were correct, but on which participants were more likely to make a word as compared with a nonword error (contrast of internal monitoring). Furthermore, comparing errors to correct utterances (contrast of external monitoring), we observed increased activation of the same cerebellar region, of the superior medial cerebellum, and of regions in temporal and medial frontal cortex. The presence of the cerebellum for both internal and external monitoring indicates the use of forward modeling across the planning and articulation of speech. Dissociations across internal and external monitoring in temporal and medial frontal cortex indicate that monitoring of overt errors is more reliant on vocal feedback control.
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Contributor : Chotiga Pattamadilok Connect in order to contact the contributor
Submitted on : Friday, September 10, 2021 - 9:56:54 AM
Last modification on : Thursday, October 21, 2021 - 3:14:05 PM
Long-term archiving on: : Saturday, December 11, 2021 - 6:33:27 PM


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Elin Runnqvist, Valérie Chanoine, Kristof Strijkers, Chotiga Pattamadilok, Mireille Bonnard, et al.. Cerebellar and Cortical Correlates of Internal and External Speech Error Monitoring. Cerebral Cortex Communications, Oxford University Press, 2021, 2, ⟨10.1093/texcom/tgab038⟩. ⟨hal-03340216⟩



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