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Limited plastic potential of the left ventral premotor cortex in speech articulation: Evidence From intraoperative awake mapping in glioma patients
Open accessAbstract
OBJECTIVES: Despite previous lesional and functional neuroimaging studies, the actual role of the left ventral premotor cortex (vPMC), i.e., the lateral part of the precentral gyrus, is still poorly known. EXPERIMENTAL DESIGN: We report a series of eight patients with a glioma involving the left vPMC, who underwent awake surgery with intraoperative cortical and subcortical language mapping. The function of the vPMC, its subcortical connections, and its reorganization potential are investigated in the light of surgical findings and language outcome after resection. PRINCIPAL OBSERVATIONS: Electrostimulation of both the vPMC and subcortical white matter tract underneath the vPMC, that is, the anterior segment of the lateral part of the superior longitudinal fascicle (SLF), induced speech production disturbances with anarthria in all cases. Moreover, although some degrees of redistribution of the vPMC have been found in four patients, allowing its partial resection with no permanent speech disorders, this area was nonetheless still detected more medially in the precentral gyrus in the eight patients, despite its invasion by the glioma. Moreover, a direct connection of the vPMC with the SLF was preserved in all cases. CONCLUSIONS: Our original data suggest that the vPMC plays a crucial role in the speech production network and that its plastic potential is limited. We propose that this limitation is due to an anatomical constraint, namely the necessity for the left vPMC to remain connected to the lateral SLF. Beyond fundamental implications, such knowledge may have clinical applications, especially in surgery for tumors involving this cortico-subcortical circuit.
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“Speech production impairments have also been induced after aAF disruption by means of direct electrical stimulation (van Geemen et al., 2014).”
From Damage to Broca’s area does not contribute to long-term speech production outcome after stroke (2021) · cites this paper as van Geemen et al., 2014
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Metadata
- Authors
- van Geemen, K., Herbet, G., Moritz‐Gasser, S., & Duffau, H.
- Affiliations
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Centre, Montpellier, France
- Inserm (FR)
- Venue
- Human Brain Mapping
- Publisher
- Wiley
- Published
- 2013-04-24
- Volume
- 35
- Issue
- 4
- Pages
- 1587-1596
- ISSN
- 1065-9471 (ISSN-L)
- 1097-0193
- PMC
- PMC6869841
- OpenAlex
- W1539232365
- Cited by
- 115
- References
- 60
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 3 · 2023: 12 · 2022: 13 · 2021: 10 · 2020: 10 · 2019: 3 · 2018: 9 · 2017: 11 · 2016: 10 · 2015: 9 · 2014: 13 · 2013: 6
- FWCI
- 6.95
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Human Brain Mapping (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
- Keywords
- speech articulation, speech production, superior longitudinal fasciculus, cortical reorganization, plasticity, glioma, awake craniotomy, intraoperative language mapping, anarthria, precentral gyrus, tumor resection
- MeSH terms
- Adult, Brain Mapping, Brain Neoplasms, Electric Stimulation, Female, Frontal Lobe, Glioma, Humans, Language, Language Tests, Functional Laterality, Magnetic Resonance Imaging, Male, Middle Aged, Nerve Fibers, Myelinated, Neural Pathways, Neuronal Plasticity, Speech, Speech Disorders, Wakefulness, Young Adult, Intraoperative Neurophysiological Monitoring
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