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Erschienen in: Brain Structure and Function 3/2019

14.01.2019 | Original Article

Dissociating motor–speech from lexico-semantic systems in the left frontal lobe: insight from a series of 17 awake intraoperative mappings in glioma patients

verfasst von: Francesco Corrivetti, Michel Thiebaut de Schotten, Isabelle Poisson, Sébastien Froelich, Maxime Descoteaux, François Rheault, Emmanuel Mandonnet

Erschienen in: Brain Structure and Function | Ausgabe 3/2019

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Abstract

Functional brain mapping during awake surgery procedures is the gold standard technique in the management of left frontal lobe tumors. Nevertheless, a unified picture of the language subsystems encountered during left frontal lobe mapping is still lacking. We retrospectively analyzed the 49 cortical and the 33 axonal sites of functional language mapping performed in 17 patients operated for a left frontal lobe glioma under awake conditions. Sites were tagged on the postoperative MRI, based on anatomical landmarks and intraoperative photography. All MRIs and tags were then registered in the MNI template. Speech disturbances related to motor functions (speech arrest—with or without superior limb arrest—, stuttering, and vocalization) were grouped together as “motor–speech” responses. Anomias, semantic paraphasia, perseverations, and PPTT errors were classified as “lexico-semantic” responses. MNI-registered axonal sites were used as seed for computing disconnectome maps from a tractogram atlas of ten healthy individuals, as implemented in the BCB toolkit. The cortical distribution of lexico-semantic responses appeared to be located anteriorly (pars triangularis of the inferior frontal gyrus and posterior end of the middle and superior frontal gyrus) compared to motor–speech responses (lower end of the precentral gyrus and pars opercularis). Within the white matter, motor–speech responses and lexico-semantic responses overlapped on the trajectory of the aslant and fronto-striatal tracts, but the lexico-semantic sites were located more anteriorly (mean Y coordinate on the MNI system was 21.2 mm for lexico-semantic sites and 14.3 mm for the motor–speech sites; Wilcoxon test: W = 60.5, p = 0.03). Moreover, disconnectome maps evidenced a clear distinction between the two subsystems: posterior fronto-striatal and frontal aslant tracts, corpus callosum and cortico-spinal tract were related to the motor–speech sites, whereas anterior frontal aslant tract, inferior-fronto-occipital fasciculus (IFOF) and anterior thalamic radiations were related to the lexico-semantic sites. Hence, we evidenced distinct anatomical substrates for the motor–speech and lexico-semantic systems. Regarding the aslant/fronto-striatal system, an anterior to posterior gradient was found, with a lexico-semantic role for the anterior part and a motor–speech involvement for the posterior part. For tumors abutting the precentral sulcus, posterior boundaries of the resection are made of motor–speech sites, meaning that the anteriorly located lexico-semantic system is no more functional, as a result of network reorganization by plasticity.
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Literatur
Zurück zum Zitat Duffau H, Capelle L, Sichez N et al (2002) Intraoperative mapping of the subcortical language pathways using direct stimulations. An anatomo-functional study. Brain 125:199–214CrossRefPubMed Duffau H, Capelle L, Sichez N et al (2002) Intraoperative mapping of the subcortical language pathways using direct stimulations. An anatomo-functional study. Brain 125:199–214CrossRefPubMed
Zurück zum Zitat Duffau H, Capelle L, Denvil D et al (2003b) The role of dominant premotor cortex in language: a study using intraoperative functional mapping in awake patients. Neuroimage 20:1903–1914CrossRefPubMed Duffau H, Capelle L, Denvil D et al (2003b) The role of dominant premotor cortex in language: a study using intraoperative functional mapping in awake patients. Neuroimage 20:1903–1914CrossRefPubMed
Zurück zum Zitat Howard D, Patterson KE, Company TVT (1992) The pyramids and palm trees test: a test of semantic access from words and pictures. Thames Valley Test Company, Bury St Edmunds Howard D, Patterson KE, Company TVT (1992) The pyramids and palm trees test: a test of semantic access from words and pictures. Thames Valley Test Company, Bury St Edmunds
Zurück zum Zitat Krainik A, Duffau H, Capelle L et al (2004) Role of the healthy hemisphere in recovery after resection of the supplementary motor area. Neurology 62:1323–1332CrossRefPubMed Krainik A, Duffau H, Capelle L et al (2004) Role of the healthy hemisphere in recovery after resection of the supplementary motor area. Neurology 62:1323–1332CrossRefPubMed
Zurück zum Zitat Metz-Lutz M, Kremin H, Deloche G et al (1991) Standardisation d’un test de dénomination orale: contrôle des effets de l’âge, du sexe et du niveau de scolarité chez les sujets adultes normaux. Neuropsychol Rev 1:73–95 Metz-Lutz M, Kremin H, Deloche G et al (1991) Standardisation d’un test de dénomination orale: contrôle des effets de l’âge, du sexe et du niveau de scolarité chez les sujets adultes normaux. Neuropsychol Rev 1:73–95
Zurück zum Zitat Peraud A, Meschede M, Eisner W et al (2002) Surgical resection of grade II astrocytomas in the superior frontal gyrus. Neurosurgery 50:966–975; (discussion 975–977)PubMed Peraud A, Meschede M, Eisner W et al (2002) Surgical resection of grade II astrocytomas in the superior frontal gyrus. Neurosurgery 50:966–975; (discussion 975–977)PubMed
Zurück zum Zitat Rheault F, Houde J, Goyette N et al (2016) MI-Brain, a software to handle tractograms and perform interactive virtual dissection. Lisbon, Portugal Rheault F, Houde J, Goyette N et al (2016) MI-Brain, a software to handle tractograms and perform interactive virtual dissection. Lisbon, Portugal
Zurück zum Zitat Wu C, Pu S, Lin Y et al (2008) Fractionated resection on low grade gliomas involving Broca’s area and insights to brain plasticity. Chin Med J 121:2026–2030PubMed Wu C, Pu S, Lin Y et al (2008) Fractionated resection on low grade gliomas involving Broca’s area and insights to brain plasticity. Chin Med J 121:2026–2030PubMed
Metadaten
Titel
Dissociating motor–speech from lexico-semantic systems in the left frontal lobe: insight from a series of 17 awake intraoperative mappings in glioma patients
verfasst von
Francesco Corrivetti
Michel Thiebaut de Schotten
Isabelle Poisson
Sébastien Froelich
Maxime Descoteaux
François Rheault
Emmanuel Mandonnet
Publikationsdatum
14.01.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Brain Structure and Function / Ausgabe 3/2019
Print ISSN: 1863-2653
Elektronische ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-019-01827-7

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