Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

01 July 1996

Spectral analysis of EEG during rest and reading in normal and dyslexic children

Josef Faber

Med Sci Monit 1996; 2(4): CR461-465 :: ID: 499953


Clinical examination and computerized EEG were performed in 10 healthy and 10 dyslexic children aged 10-14 years under different conditions and tests, e.g. eyes at rest, reading and Raven's test. Alpha activity in both groups of children, healthy and dyslexic alike, is inversely proportional to their state of attention: the less alpha, the greater the attention. This phenomenon is the more conspicious, the more occipitally the site under scrutiny is localized. Results from centro-temporo-parieto-occipital electrodes, as those from the prefrontal regions, were distorted by artifacts. Particularly, the phenomenon represents a drop in the amount of alpha on opening the eyes, another drop during reading, and the lowest level of alpha activity during Raven's test. Delta activity is directly proportional to mental effort: the greater the amount of delta activity, the more mental effort is exerted. There is, however, a major difference between the two groups of children. Healthy children show less delta activity during reading and more during Raven's test while dyslexic children show more delta activity during reading and less during Raven's test. Alpha activity as an expression of vigilance and attention is chietly a manifestation of thalamocortical interaction. Delta activity seems to pertain rather to autochthonous activities of the cortex. It is always more abundant if the cortex becomes at least relatively more autonomous as in ontogenesis, e.g., children from birth until 1 to 3 years of age have a dominant delta band in EEG or in focal pathological deafferentations such as intracranial lesions, or generalized deafferentations, e.g. comata, or again physiological deafferentations such as synchronous sleep, and mental activity. It appears that computerized EEG can be used as an auxiliary method for the diagnosis of dyslexia.

Keywords: healthy and dyslexic children, EEG analysis, psychotest

Add Comment 0 Comments

361 0


01 June 2023 : Editorial  

Editorial: Infectious Disease Surveillance Using Artificial Intelligence (AI) and its Role in Epidemic and Pandemic Preparedness

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.941209

Med Sci Monit 2023; 29:e941209


In Press

07 Jun 2023 : Review article  

Ultrasound-Guided Brachial Plexus Block by Costoclavicular Space Approach: A Narrative Review

Med Sci Monit In Press; DOI: 10.12659/MSM.939920  

05 Jun 2023 : Clinical Research  

Comparison of Texture and Color Enhancement Imaging with White Light Imaging in 52 Patients with Short-Segm...

Med Sci Monit In Press; DOI: 10.12659/MSM.940249  

05 Jun 2023 : Laboratory Research  

Comparison of Composite Resin (Duo-Shade) Shade Guide with Vita Ceramic Shades Before and After Chemical an...

Med Sci Monit In Press; DOI: 10.12659/MSM.940949  

02 Jun 2023 : Database Analysis  

The COVID-19 Crisis and the Incidence of Alcohol-Related Deaths in Poland

Med Sci Monit In Press; DOI: 10.12659/MSM.940904  

Most Viewed Current Articles

13 Nov 2021 : Clinical Research  

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

DOI :10.12659/MSM.932788

Med Sci Monit 2021; 27:e932788


30 Dec 2021 : Clinical Research  

Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...

DOI :10.12659/MSM.935379

Med Sci Monit 2021; 27:e935379

08 Mar 2022 : Review article  

A Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...

DOI :10.12659/MSM.936292

Med Sci Monit 2022; 28:e936292

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750