Objective: To verify if, by three distinct quantifiers, the measured electroencephalographic signal at rest is different from the signal measured during a word reading situation, especially considering the faster rhythms, gamma and high-gamma, as it occurs in clinical rhythms (delta to beta).
Methods: A total of 96 electroencephalographic signals measured from neurologically healthy volunteers were evaluated at two moments: resting and word reading. Each signal segment was measured by three quantifiers that separately assess normalized power, percent power, and right and left hemisphere coherence. The Mann-Whitney test was used to compare the results of the quantifiers in each brain range.
Results: The gamma and high-gamma rhythms presented a more distinct behavior when comparing the analyzed moments (resting and reading) than the clinical rhythms.
Conclusion: This finding contributes to the scarce literature on faster rhythms, which can contain information that is normally disregarded in neurological clinical practice.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7607920 | PMC |
| http://dx.doi.org/10.31744/einstein_journal/2020AO5442 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cognitive-Linguistic Profiles Underlying Reading Difficulties Within the Unique Characteristics of Hebrew Language and Writing System.
Dyslexia
February 2025
Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, Department of Learning Disabilities, University of Haifa, Haifa, Israel.
While the multiple cognitive deficits model of reading difficulties (RD) is widely supported, different cognitive-linguistic deficits may manifest differently depending on language and writing system characteristics. This study examined cognitive-linguistic profiles underlying RD in Hebrew, characterised by rich Semitic morphology and two writing versions differing in orthographic consistency-a transparent-pointed version and a deep-unpointed version. A two-step cluster analysis grouped 96 s graders and 81 fourth graders based on their phonological awareness (PA), rapid naming (RAN), orthographic knowledge (OK) and morphological-pattern identification (MPI) abilities.
View Article and Find Full Text PDFVisual attention matters during word recognition: A Bayesian modeling approach.
Psychon Bull Rev
January 2025
Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LPNC, 38000, Grenoble, France.
It is striking that visual attention, the process by which attentional resources are allocated in the visual field so as to locally enhance visual perception, is a pervasive component of models of eye movements in reading, but is seldom considered in models of isolated word recognition. We describe BRAID, a new Bayesian word-Recognition model with Attention, Interference and Dynamics. As most of its predecessors, BRAID incorporates three sensory, perceptual, and orthographic knowledge layers together with a lexical membership submodel.
View Article and Find Full Text PDFSensitivity to Graphotactic Regularities in Elementary School: Development and Contributing Variables.
Lang Speech Hear Serv Sch
January 2025
Faculté de Psychologie et des Sciences de l'Education, Université de Genève, Suisse.
Purpose: Graphotactic regularities are statistical regularities governing orthographic systems that children are sensitive to from the start of their literacy learning. The current study observed changes in children's sensitivity to a set of graphotactic patterns across different grades in elementary school and measured the contribution of skills such as expressive spelling, reading fluency, nonverbal reasoning, and receptive vocabulary to children's sensitivity of these graphotactic regularities.
Method: One thousand one hundred one French-speaking children in Grades 1-5 completed a writing under a dictation task, a text reading fluency task, and a pseudo-orthographic choice task involving different graphotactic regularities.
The Role of Morphological Structure in Determining the Optimal Viewing Position During Visual Word Recognition in Beginning Readers.
Children (Basel)
November 2024
Univ. Lille, CNRS, UMR 9193-SCALab-Sciences Cognitives et Sciences Affectives, F-59000 Lille, France.
Background/objectives: The present study examines the role of morphemic units in the initial word recognition stage among beginning readers. We assess whether and to what extent sublexical units, such as morphemes, are used in processing French words and how their use varies with reading proficiency.
Methods: Two experiments were conducted to investigate the perceptual and morphological effects on the recognition of words presented in central vision, using a variable-viewing-position technique.
Cortical and behavioral correlates of alexia in primary progressive aphasia and Alzheimer's disease.
Neuropsychologia
January 2025
Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center, USA.
The underlying causes of reading impairment in neurodegenerative disease are not well understood. The current study seeks to determine the causes of surface alexia and phonological alexia in primary progressive aphasia (PPA) and typical (amnestic) Alzheimer's disease (AD). Participants included 24 with the logopenic variant (lvPPA), 17 with the nonfluent/agrammatic variant (nfvPPA), 12 with the semantic variant (svPPA), 19 with unclassifiable PPA (uPPA), and 16 with AD.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!