Assessing Auditory Processing Disorders in Children with Developmental Dyslexia Using Auditory Cognitive Event-Related Potentials

2013 ◽  
Vol 65 (3) ◽  
pp. 129-135 ◽  
Author(s):  
Barbara Maciejewska ◽  
Bozena Wiskirska-Woznica ◽  
Piotr Swidzinski ◽  
Michal Michalak
Keyword(s):  
Developmental Dyslexia ◽  
Auditory Processing ◽  
Event Related Potentials ◽  
Auditory Processing Disorders ◽  
Related Potentials ◽  
Cognitive Event

scholarly journals Event related potentials in cases of amblyaudia

2020 ◽  
Vol 6 (4) ◽  
pp. 747
Author(s):  
Wessam Mostafa Essawy
Keyword(s):  
Auditory Processing ◽  
Event Related Potentials ◽  
Speech Development ◽  
Screening Tests ◽  
Control Group ◽  
Auditory Information ◽  
Central Auditory Processing ◽  
Auditory Processing Disorders ◽  
Central Auditory Processing Disorders ◽  
Related Potentials

<p class="abstract"><strong>Background:</strong> Amblyaudia is a weakness in the listener’s binaural processing of auditory information. Subjects with amblyaudia also demonstrate binaural integration deficits and may display similar patterns in their evoked responses in terms of latency and amplitude of these responses. The purpose of this study was to identify the presence of amblyaudia in a population of young children subjects and to measure mismatch negativity (MMN), P300 and cortical auditory evoked potentials (CAEPs) for those individuals.</p><p class="abstract"><strong>Methods:</strong> Subjects included in this study were divided into 2 groups control group that consisted of 20 normal hearing subjects with normal developmental milestones and normal speech development. The study group (GII) consisted of 50 subjects with central auditory processing disorders (CAPDs) diagnosed by central auditory screening tests. </p><p class="abstract"><strong>Results:</strong> With using dichotic tests including dichotic digits test (DDT) and competing sentence test (CST), we could classify these cases into normal, dichotic dysaudia, amblyaudia, and amblyaudia plus with percentages (40%, 14%, 38%, 8% respectively). Using event related potentials, we found that P300 and MMN are more specific in detecting neurocognitive dysfunction related to allocation of attentional resources and immediate memory in these cases.</p><p class="abstract"><strong>Conclusions:</strong> The presence of amblyaudia in cases of central auditory processing disorders (CAPDs) and event related potentials is an objective tool for diagnosis, prognosis and follow up after rehabilitation.</p>

scholarly journals Application of Neural Network Modeling to Identify Auditory Processing Disorders in School-Age Children

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Sridhar Krishnamurti
Keyword(s):  
Neural Network ◽  
Auditory Processing ◽  
Network Modeling ◽  
Event Related Potentials ◽  
School Age Children ◽  
Neural Network Modeling ◽  
School Age ◽  
Auditory Processing Disorders ◽  
Speed Of Information Processing ◽  
Related Potentials

P300 Auditory Event-Related Potentials (P3AERPs) were recorded in nine school-age children with auditory processing disorders and nine age- and gender-matched controls in response to tone burst stimuli presented at varying rates (1/second or 3/second) under varying levels of competing noise (0 dB, 40 dB, or 60 dB SPL). Neural network modeling results indicated that speed of information processing and task-related demands significantly influenced P3AERP latency in children with auditory processing disorders. Competing noise and rapid stimulus rates influenced P3AERP amplitude in both groups.

Auditory Event-Related Potentials in the Assessment of Auditory Processing Disorders: A Pilot Study

2003 ◽  
Vol 34 (1) ◽  
pp. 23-29 ◽  
Author(s):  
A. Liasis ◽  
D.-E. Bamiou ◽  
P. Campbell ◽  
T. Sirimanna ◽  
S. Boyd ◽  
...  
Keyword(s):  
Pilot Study ◽  
Auditory Processing ◽  
Event Related Potentials ◽  
Auditory Processing Disorders ◽  
Auditory Event ◽  
Related Potentials ◽  
Auditory Event Related Potentials

scholarly journals Reduced Visual Magnocellular Event-Related Potentials in Developmental Dyslexia

2021 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
John Stein
Keyword(s):  
Steady State ◽  
Developmental Dyslexia ◽  
Reading Ability ◽  
Event Related Potentials ◽  
Black And White ◽  
Reverse Pattern ◽  
Related Potentials ◽  
The Right ◽  
Visual Hemifields ◽  
Electroencephalogram Eeg

(1) Background—the magnocellular hypothesis proposes that impaired development of the visual timing systems in the brain that are mediated by magnocellular (M-) neurons is a major cause of dyslexia. Their function can now be assessed quite easily by analysing averaged visually evoked event-related potentials (VERPs) in the electroencephalogram (EEG). Such analysis might provide a useful, objective biomarker for diagnosing developmental dyslexia. (2) Methods—in adult dyslexics and normally reading controls, we recorded steady state VERPs, and their frequency content was computed using the fast Fourier transform. The visual stimulus was a black and white checker board whose checks reversed contrast every 100 ms. M- cells respond to this stimulus mainly at 10 Hz, whereas parvocells (P-) do so at 5 Hz. Left and right visual hemifields were stimulated separately in some subjects to see if there were latency differences between the M- inputs to the right vs. left hemispheres, and these were compared with the subjects’ handedness. (3) Results—Controls demonstrated a larger 10 Hz than 5 Hz fundamental peak in the spectra, whereas the dyslexics showed the reverse pattern. The ratio of subjects’ 10/5 Hz amplitudes predicted their reading ability. The latency of the 10 Hz peak was shorter during left than during right hemifield stimulation, and shorter in controls than in dyslexics. The latter correlated weakly with their handedness. (4) Conclusion—Steady state visual ERPs may conveniently be used to identify developmental dyslexia. However, due to the limited numbers of subjects in each sub-study, these results need confirmation.

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