The contribution of mesiofrontal cortex to the preparation and execution of repetitive syllable productions: an fMRI study
Abstract
Clinical data indicate that the brain network of speech motor control can be subdivided into at least three functional-neuroanatomical subsystems: (i) planning of movement sequences (premotor ventrolateral-frontal cortex and/or anterior insula), (ii) preparedness for/initiation of upcoming verbal utterances (supplementary motor area, SMA), and (iii) on-line innervation of vocal tract muscles, i.e., motor execution (corticobulbar system, basal ganglia, cerebellum). Using an event-related design, this functional magnetic resonance imaging (fMRI) study sought to further delineate the contribution of SMA to pre-articulatory processes of speech production (preceding the innervation of vocal tract muscles) during an acoustically paced syllable repetition task forewarned by a tone signal. Hemodynamic activation across the whole brain and the time courses of the responses in five regions of interest (ROIs) were computed. First, motor preparation was associated with a widespread bilateral activation pattern, encompassing brainstem structures, SMA, insula, premotor ventrolateral-frontal areas, primary sensorimotor cortex (SMC), basal ganglia, and the superior cerebellum. Second, calculation of the time courses of BOLD ("blood oxygenation level-dependent") signal changes revealed the warning stimulus to elicit synchronous onset of hemodynamic activation in these areas. However, during 4-s intervals of syllable repetitions SMA and cerebellum showed opposite temporal activation patterns in terms of a shorter (SMA) and longer (cerebellum) latency of the entire BOLD response-as compared to SMC, indicating different pacing mechanisms during the initial and the ongoing phase of the task. Nevertheless, the contribution of SMA was not exclusively restricted to the preparation/initiation of verbal responses since the extension of mesiofrontal activation varied with task duration.
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The basal ganglia are involved in innervations of vocal tract muscles.
“This is consistent with the basal ganglia being involved in the innervations of vocal tract muscles (Brendel et al., 2010).”
From A review and synthesis of the first 20years of PET and fMRI studies of heard speech, spoken language and reading (2012) · cites this paper as Brendel et al., 2010
In SMA-proper, activation is greater for complex articulation than prolonged vowel production or exhalation and is maintained during production, consistent with a role in execution as well as initiation.
“In the SMA-proper, activation was greater for complex articulation than prolonged vowel production or exhalation (Loucks et al., 2007) and maintained during production consistent with a role in execution as well as initiation (Brendel et al., 2010).”
From A review and synthesis of the first 20years of PET and fMRI studies of heard speech, spoken language and reading (2012) · cites this paper as Brendel et al., 2010
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- Authors
- Brendel, B., Hertrich, I., Erb, M., Lindner, A., Riecker, A., Grodd, W., & Ackermann, H.
- Affiliations
- Hertie Institute for Clinical Brain Research (DE)
- University of Tübingen (DE)
- Universität Ulm (DE)
- Corresponding author
- Brendel, Bettina
- Venue
- NeuroImage
- Publisher
- Elsevier BV
- Published
- 2010-04
- Volume
- 50
- Issue
- 3
- Pages
- 1219-1230
- ISSN
- 1053-8119 (ISSN-L)
- OpenAlex
- W2012053053
- Cited by
- 81
- References
- 91
- Citations by year
- 2026: 1 · 2025: 5 · 2024: 3 · 2023: 6 · 2022: 2 · 2021: 3 · 2020: 6 · 2019: 3 · 2018: 1 · 2017: 3 · 2016: 9 · 2015: 6 · 2014: 7 · 2013: 7 · 2012: 11
- FWCI
- 5.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- NeuroImage (publishedVersion)
- PubMed (publishedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Funders
- Deutsche Forschungsgemeinschaft
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Phonetics and Phonology Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Keywords
- supplementary motor area, speech motor control, syllable repetition, motor preparation, cerebellum, premotor cortex, basal ganglia, primary sensorimotor cortex, speech initiation
- MeSH terms
- Adult, Brain, Brain Mapping, Cerebrovascular Circulation, Female, Frontal Lobe, Humans, Magnetic Resonance Imaging, Male, Neural Pathways, Oxygen, Phonetics, Psychomotor Performance, Speech, Time Factors, Young Adult
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