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Changes in Resting-State Neural Activity and Nerve Fibres in Ischaemic Stroke Patients with Hemiplegia
This study suggests that structural remodelling of functionally relevant white matter tracts is probably an adaptive response that compensates for injury to the brain.PMID:36604349 | DOI:10.1007/s10548-022-00937-6
Source: Brain Topography - January 5, 2023 Category: Neuroscience Authors: Xuejin Cao Zan Wang Xiaohui Chen Yanli Liu Idriss Ali Abdoulaye Shenghong Ju Shiyao Zhang Shanshan Wu Yuancheng Wang Yijing Guo Source Type: research

White matter microstructure and verbal fluency
We examined white matter correlates of semantic (Category Fluency Animals) and phonemic or lexical fluency (COWAT FAS) after stroke, accounting for stroke severity measured with the National Institutes of health Stroke Scale (NIHSS), age, sex, and level of education. White matter fibre density and cross-section measures were automatically extracted from 72 tracts, using MRtrix and TractSeg software in 72 ischaemic stroke survivors assessed 3 months after their event. We conducted regression analyses separately for phonemic and semantic fluency for each tract. Worse semantic fluency was associated with lower fibre density i...
Source: Brain Structure and Function - October 17, 2022 Category: Neuroscience Authors: Natalia Egorova-Brumley Chen Liang Mohamed Salah Khlif Amy Brodtmann Source Type: research

Converting sounds to meaning with ventral semantic language networks: integration of interdisciplinary data on brain connectivity, direct electrical stimulation and clinical disconnection syndromes
Brain Struct Funct. 2022 Mar 10. doi: 10.1007/s00429-021-02438-x. Online ahead of print.ABSTRACTNumerous traditional linguistic theories propose that semantic language pathways convert sounds to meaningful concepts, generating interpretations ranging from simple object descriptions to communicating complex, analytical thinking. Although the dual-stream model of Hickok and Poeppel is widely employed, proposing a dorsal stream, mapping speech sounds to articulatory/phonological networks, and a ventral stream, mapping speech sounds to semantic representations, other language models have been proposed. Indeed, despite seemingl...
Source: Brain Structure and Function - March 10, 2022 Category: Neuroscience Authors: Viktoria Sefcikova Juliana K Sporrer Parikshit Juvekar Alexandra Golby George Samandouras Source Type: research