Abstract

Background: The electroencephalogram is a unique and valuable measure of the brain’s electrical function. There have been few studies of EEG reported regarding the absence of alpha rhythm in blind subjects. Most of the studies indicate that the alpha activity is reduced or even missing in blind subjects. Aims & Objectives: To evaluate EEG patterns in blind children and to compare this pattern with age and sex matched sighted children and to know whether there is any relation between alpha rhythm and blindness. Materials and method: 30 normal sighted and 30 blind children aged 10-15 years from school for the blind were subjected to EEG recording using Computerized Digital Electroencephalograph (Medicaid NV 3200) Neuro-Vision Plus. Subjects were made to lie down on a couch in supine position, mentally relaxed with eyes closed and without any movements. A 16 channel EEG was recorded for each subject. Results: It was found that there appears nosignificant difference between them. Duration of blindness has no effect on EEG pattern. Conclusion: EEG pattern and the alpha rhythm is found to be normal in both subject and controls.

Authors and Affiliations