A narrative review of the anatomy and function of the white matter tracts in language production and comprehension

Shekari, Ehsan; Nozari, Nazbanou

doi:10.3389/fnhum.2023.1139292

Cited by 14 publications

(9 citation statements)

References 487 publications

(756 reference statements)

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“…The asymmetry in the activity in the left anterior temporal and inferior frontal areas between the EST and IST demonstrates the changes in automaticity of semantic processing. These two areas are anatomically connected via the uncinate fasciculus or extreme capsule [7,58,59]. The left anterior temporal area (BA 38) is related to semantic integration [6]: The features activated as a concept unit are computed for matching or coherence [60] via an amodal neural hub [57,61].…”

Section: Results Of Csd Analysismentioning

confidence: 99%

Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing

Soshi

2023

Preprint

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Interhemispheric and frontoparietal functional connectivity have been reported to increase during explicit information processing. However, it is unclear how and when interhemispheric and frontoparietal functional connectivity interact during explicit semantic processing. Here, we tested the neural coupling hypothesis that explicit semantic processing promotes neural activity in the nondominant right hemispheric areas owing to synchronization with enhanced frontoparietal functional connectivity at later processing stages. We analyzed electroencephalogram data obtained using a semantic priming paradigm, which comprised visual priming and target words successively presented under direct or indirect attention to semantic association. Scalp potential analysis demonstrated that the explicit processing of congruent targets reduced negative event-related potentials, as previously reported. Current source density analysis showed that explicit semantic processing activated the right temporal area during later temporal intervals. Sub-sequent dynamic functional connectivity analyses of current source density revealed that explicit semantic processing increased the correlation between right temporal source activities and frontoparietal functional connectivity in later temporal intervals. These findings indicate that explicit semantic processing increases neural coupling between the interhemispheric and frontoparietal functional connectivity during later stages of semantic processing.

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Section: Results Of Csd Analysismentioning

confidence: 99%

Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing

Soshi

2023

Preprint

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“…This finding is consistent with a vast literature, summarized in a national report, that finds that oral language skills are a powerful predictor of later literacy skills ("Developing Early Literacy: Report of the National Early Literacy Panel," 2010). It is interesting that the neural basis of reading has identified functional networks where oral language processes are recruited for phonological analysis of written language (Cattinelli et al, 2013) Moreover the connectome for language and reading are also highly overlapping Shekari & Nozari, 2023;Wandell & Yeatman, 2013).…”

Section: Discussionmentioning

confidence: 99%

LWL and Literacy in PT and FT children

Marchman¹,

Ashland²,

Loi³

et al. 2023

Preprint

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Variation in skill at processing language in real time in toddlerhood, i.e., language processing efficiency, has been shown to be associated with variation in later language and non-verbal cognitive outcomes in full term (FT) and preterm (PT) children. However, no studies to date have assessed relations between early language processing efficiency and later pre-literacy skills and whether these relations operate directly on outcomes or indirectly, via relations to other skills, such as expressive language. In this study, participants (n=94, 49 FT, 45 PT) were assessed in the looking-while-listening (LWL) task at 18 months (corrected for degree of prematurity in PT group) and on standardized tests of pre-literacy skills (print knowledge and phonological awareness) and expressive language at 4 ½ years. Early language processing efficiency predicted pre-literacy outcomes (r2 change ranged from 7.8 to 19.5%, p < 0.01) in FT and PT children. These relations were significantly reduced when controlling for children’s expressive language abilities. However, processing speed and phonological awareness were also directly related. Parallel relations were observed in both birth groups. Thus, early real-time language processing efficiency in toddler years supports expressive language abilities at preschool age, which in turn supports developing pre-literacy skills in FT and PT children.

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“…Wernicke's area, positioned between the temporal and parietal lobes, plays a crucial role in understanding speech, working together with Broca's area in the frontal lobe. It's worth noting that the functions of the left temporal lobe go beyond basic perception, encompassing comprehension, naming, and verbal memory [19].…”

Section: Grey Matter Volume Abnormalities In Pdsmentioning

confidence: 99%

Structural brain alterations in persistent developmental stuttering: a whole- brain voxel-based morphometry (VBM) analysis of grey and white matter

Shojaeilangari,

Taghizadeh,

Radman

2024

Preprint

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Persistent developmental stuttering (PDS), known as childhood-onset speech fluency disorder involves, significant involuntary problems in normal fluency such as repetition and prolongation of sounds, syllables, or words, as well as silence for certain syllables or words, or pauses within a word. Given the significance of brain morphological abnormalities in unraveling the origins of various neurological disorders, the scientific community has displayed a longstanding fascination with the advancement of structural neuroimaging methods like voxel-based morphometry (VBM). Despite numerous investigations using structural neuroimaging techniques to examine alterations in brain structure associated with stuttering, the precise brain regions predominantly affected by this speech disorder remain unclear. Here, adults with PDS (n = 15) and fluent speakers (n = 15) carefully matched based on age, sex, education, and hand preference were examined utilizing MRI scans to detect possible brain volumetric abnormalities in the stuttering group compared to the healthy control group. Using a whole-brain VBM technique, the brains of adults with PDS and normal subjects were compared concerning grey matter (GM) and white matter (WM) volume differences. Our investigation revealed a reduction in WM volume within the cerebellum. Moreover, we observed increased GM volumes in two specific regions: the right Superior Frontal Gyrus (SFG) and the left Middle Temporal Gyrus (MTG). Conversely, a decrease in GM volume was observed in the left SFG, bilateral paracentral lobule, the right cuneus and the right cerebellum. These findings strengthen the potential significance of brain structures in persistent stuttering.

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A narrative review of the anatomy and function of the white matter tracts in language production and comprehension

Cited by 14 publications

References 487 publications

Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing

Neural Coupling between Interhemispheric and Frontoparietal Functional Connectivity during Semantic Processing

LWL and Literacy in PT and FT children

Structural brain alterations in persistent developmental stuttering: a whole- brain voxel-based morphometry (VBM) analysis of grey and white matter

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