Neuroscientists at TU Dresden discover neural mechanisms of developmental dyslexia

(Technische Universit ä t Dresden) Neuroscientist Professor Katharina von Kriegstein from TU Dresden and an international team of experts show in a recently published study that people with dyslexia have a weakly developed structure that is not located in the cerebral cortex, but at a subcortical processing stage; namely the white matter connectivity between the left auditory motion-sensitive planum temporale (mPT) and the left auditory thalamus (medial geniculate body, MGB).
Source: EurekAlert! - Social and Behavioral Science - Category: International Medicine & Public Health Source Type: news

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Title: New Finding Challenges Old Notions About DyslexiaCategory: Health NewsCreated: 10/10/2019 12:00:00 AMLast Editorial Review: 10/11/2019 12:00:00 AM
Source: MedicineNet Kids Health General - Category: Pediatrics Source Type: news
Conditions:   Specific Developmental Disorders of Speech and Language;   Specific Learning Disorder;   Dyslexia, Developmental;   Developmental Coordination Disorder;   Dyspraxia Intervention:   Diagnostic Test: Diagnostic of specific learning disabilities or of Developmental Coordination Disorder Sponsors:   CNGE IRMG Association;   Scalab CNRS 9193 Recruiting
Source: - Category: Research Source Type: clinical trials
THURSDAY, Oct. 10, 2019 -- The cerebellum does not affect reading ability in people with dyslexia, according to a new study that challenges a controversial theory. The cerebellum is a brain structure traditionally involved in motor function. Some...
Source: - Daily MedNews - Category: General Medicine Source Type: news
Conclusions The dyslexia + DLD group demonstrated word learning deficits across the range of word learning tasks that tapped phonology and semantic processing, whereas the dyslexia group primarily struggled with the phonological aspects of word learning. Supplemental Material PMID: 31600465 [PubMed - in process]
Source: Language, Speech, and Hearing Services in Schools - Category: Speech-Language Pathology Authors: Tags: Lang Speech Hear Serv Sch Source Type: research
Publication date: Available online 4 October 2019Source: Developmental Cognitive NeuroscienceAuthor(s): Georgette Pleisch, Iliana I. Karipidis, Alexandra Brem, Martina Röthlisberger, Alexander Roth, Daniel Brandeis, Susanne Walitza, Silvia BremAbstractThe level of reading skills in children and adults is reflected in the strength of preferential neural activation to print. Such preferential activation appears in the N1 event-related potential (ERP) over the occipitotemporal scalp after around 150-250 ms and the corresponding blood oxygen level dependent (BOLD) signal in the ventral occipitotemporal (vOT) cortex. Here,...
Source: Developmental Cognitive Neuroscience - Category: Neuroscience Source Type: research
AbstractChildren with dyslexia face persistent difficulties in acquiring reading skills, often making guessing errors characterized by the replacement of a word by an orthographic neighbour. These reading errors could be related to inhibition problems within the reading task. Previous studies examining inhibition skills in dyslexic children led to unclear results when inhibition in cognitive and non-reading tasks was evaluated. The present study aims to demonstrate whether dyslexic children have a specific reading inhibition deficit or if they have a general inhibition deficit. Eighteen dyslexic children (age range: 106 &n...
Source: Reading and Writing - Category: Child Development Source Type: research
Developmental dyslexia (DD) is a multi-system disorder, combining influences of susceptibility genes and environmental factors. The causative interaction between specific genetic factors, brain regions, and personality/mental disorders, as well as specific learning disabilities, has been thoroughly investigated with regard to the approach of developing a multifaceted diagnostic procedure with an intervention strategy potential. In an attempt to add new translational evidence to the interconnection of the above factors in the occurrence of DD, we performed a combinatorial analysis of brain asymmetries, personality traits, c...
Source: Frontiers in Human Neuroscience - Category: Neuroscience Source Type: research
Besides characteristic muscle weakness, learning and behavioural problems are common in Duchenne muscular dystrophy (DMD). These extra-muscular manifestations are most prominent in patients with downstream mutations affecting dystrophin isoforms Dp140 and Dp71. Moreover, reading disabilities have been reported in DMD which seem to be similar to phonological dyslexia. In dyslexia, structural architecture of certain white matter tracts was shown to be related to reading performance. We used quantitative magnetic resonance (MR) imaging to study brain microstructure in DMD patients and healthy controls (HC).
Source: Neuromuscular Disorders - Category: Neurology Authors: Source Type: research
In this study, we used voxel-based morphometry (VBM) to investigate brain differences in grey matter volume associated with a transparent language in a sample of 25 native Spanish participants (13 dyslexic and 12 non-dyslexic children). Results revealed a volume reduction in the left occipitotemporal cortex and right cerebellum in dyslexics. Significantly, the reduction in occipitotemporal areas has been previously linked to reading in transparent languages. Our results support previous studies and are consistent with the idea that reading problems in languages with a shallow orthography are related to the ventral reading network.
Source: Journal of Neurolinguistics - Category: Speech-Language Pathology Source Type: research
By Emma Young In an era of TED talks, podcasts, and audiobooks, it’s easy to choose to listen to factual information or fiction, rather than to read it. But is that a good thing? Are there any differences in the way the brain processes the meaning of words that are heard rather than read? According to the researchers behind a thorough new study, published in the Journal of Neuroscience, the answer to this last question is “no”. But it may still be too soon to conclude that listening to an audiobook is effectively the same as reading it. Fatma Deniz at the University of California, Berkeley, and coll...
Source: BPS RESEARCH DIGEST - Category: Psychiatry & Psychology Authors: Tags: Brain Reading Source Type: blogs
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