Short frontal lobe connections of the human brain

Catani, Marco; Dell’Acqua, Flavio; Vergani, Francesco; Malik, Farah; Hodge, Harry; Roy, Prasun K.; Valabrègue, Romain; Schotten, Michel Thiebaut de

doi:10.1016/j.cortex.2011.12.001

Cited by 668 publications

(596 citation statements)

References 77 publications

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“…The frontal longitudinal system connects the dorsolateral cortex of the PM and PFC. 7 The superior longitudinal fasciculus (SLF) consists of 3 components, connecting specific frontal areas with the posterior parietal cortex. SLF I links the superior parietal lobule with the PMs and SMA; SLF II courses between the caudal part of the inferior parietal lobule and the intraparietal sulcus and the posterior prefrontal cortices; and SLF III extends from the rostral inferior parietal lobule to the ventral part of the PM and PFC.…”

Section: Discussionmentioning

confidence: 99%

Connectivity of the frontal and anterior insular network: a cortico-cortical evoked potential study

Enatsu

González-Martínez

Bulacio

et al. 2016

JNS

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OBJECT The frontal and insular fiber network in humans remains largely unknown. This study investigated the connectivity of the frontal and anterior insular network in humans using cortico-cortical evoked potential (CCEP). METHODS This retrospective analysis included 18 patients with medically intractable focal epilepsy who underwent stereoelectroencephalography and CCEP. Alternating 1-Hz electrical stimuli were delivered to parts of the frontal lobe and anterior insula (prefrontal cortex [PFC], ventrolateral and dorsolateral premotor area [vPM and dPM, respectively], presupplementary motor area [pre-SMA], SMA, frontal operculum, and anterior insula). A total of 40–60 stimuli were averaged in each trial to obtain CCEP responses. The distribution of CCEP was evaluated by calculating the root mean square of CCEP responses. RESULTS Stimulation of the PFC elicited prominent CCEP responses in the medial PFC and PMs over the ipsilateral hemisphere. Stimulation of the vPM and dPM induced CCEP responses in the ipsilateral frontoparietal areas. Stimulation of the pre-SMA induced CCEP responses in the ipsilateral medial and lateral frontal areas and contralateral pre-SMA, whereas stimulation of the SMA induced CCEP responses in the bilateral frontoparietal areas. Stimulation of the frontal operculum induced CCEP responses in the ipsilateral insula and temporal operculum. CCEPs were observed in the ipsilateral medial, lateral frontal, and frontotemporal operculum in the anterior insular stimulation. Stimulation of the vPM and SMA led to the network in the dominant hemisphere being more developed. CONCLUSIONS Various regions within the frontal lobe and anterior insula were linked to specific ipsilateral and contralateral regions, which may reflect distinct functional roles.

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Section: Discussionmentioning

confidence: 99%

Connectivity of the frontal and anterior insular network: a cortico-cortical evoked potential study

Enatsu

González-Martínez

Bulacio

et al. 2016

JNS

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“…15,40,42,43 in 28 cognitively normal college students who were recruited from the University of Texas at Dallas for a study of higher order semantic processing. Tractography was performed in native space and the tracts, as defined in each subject, were transformed into Montreal Neurological Institute (MNI) space, combined across subjects and then limited to only those voxels present in a majority of subjects.…”

Section: Roi Creationmentioning

confidence: 99%

“…Second, creating our own ROIs allowed for the flexibility to incorporate projections from the pre-SMA that are not represented in the standard atlases, but can be readily demonstrated by tractography. 15 …”

Section: Roi Creationmentioning

confidence: 99%

“…14 Connections from the pre-SMA to the frontal operculum have been termed the frontal aslant tract (FAT). 15 Interruption of white matter connections has been associated with language impairments. For example, surgical resection of the left uncinate fasciculus has resulted in impaired naming and verbal fluency, 16 and isolated damage to the corpus callosum within callosotomy patients can result in a naming impairment.…”

Section: Introductionmentioning

confidence: 99%

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White Matter Changes and Confrontation Naming in Retired Aging National Football League Athletes

Strain

Didehbani

Spence

et al. 2017

Journal of Neurotrauma

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Using diffusion tensor imaging (DTI), we assessed the relationship of white matter integrity and performance on the Boston Naming Test (BNT) in a group of retired professional football players and a control group. We examined correlations between fractional anisotropy (FA) and mean diffusivity (MD) with BNT T-scores in an unbiased voxelwise analysis processed with tract-based spatial statistics (TBSS). We also analyzed the DTI data by grouping voxels together as white matter tracts and testing each tract's association with BNT T-scores. Significant voxelwise correlations between FA and BNT performance were only seen in the retired football players ( p < 0.02). Two tracts had mean FA values that significantly correlated with BNT performance: forceps minor and forceps major. White matter integrity is important for distributed cognitive processes, and disruption correlates with diminished performance in athletes exposed to concussive and subconcussive brain injuries, but not in controls without such exposure.

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“…Em um estudo com ressonância magnética e dissecção de espécimes cerebrais, esse foi identificado fascículo conectando a parte mais posterior da área de Broca (com o córtex pré-central e pars opercularis), localizada no giro frontal inferior, com a área motora suplementar e pré-motora suplementar (Catani et al, 2012).…”

Section: Fascículo Frontal Oblíquo (Aslant)unclassified

Anatomia microcirúrgica da região do sulco limitante inferior da ínsula

Ribas¹

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Short frontal lobe connections of the human brain

Cited by 668 publications

References 77 publications

Connectivity of the frontal and anterior insular network: a cortico-cortical evoked potential study

Connectivity of the frontal and anterior insular network: a cortico-cortical evoked potential study

White Matter Changes and Confrontation Naming in Retired Aging National Football League Athletes

Anatomia microcirúrgica da região do sulco limitante inferior da ínsula

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