Aguilar FL, Valdivia ÁI, Rodríguez VRF, Gárate SE, Morgade FRM, Castillo YG, Regal CN, Hernández MHL

Language: Spanish
References: 23
Page: 13-18
PDF size: 724.57 Kb.

ABSTRACT

Objective: To identify the frequency and characteristics of the alterations in the electroencephalogram (EEG) of a group of children with specific language development disorder (SLD).
Methods: EEG was performed in children’s with SLD on spontaneous sleep for about 30 minutes with 32–channel digital equipment. The signal was obtained with a sampling frequency of 200 Hz and bandwidth filters of 0.5–30 Hz. Each study included 19 surface electrodes according to the international 10–20 system were used. For reference, shorted electrodes placed on both earlobes were used. The visual analysis of EEG evaluated presence of these variables: interictal epileptiform discharges, type, topography, lateralization, propagation.
Results: 75 patients, 58 males were studied with SLD. The EEG was abnormal in 89.3 % of patients of which 92.5% had focal interictal epileptiform discharges. The left fronto–temporal region was the most affected. 7.5 % concomitant focal slow activity in the presence of epileptiform activity in all cases this activity was located on the temporal regions.
Conclusions: The interictal epileptiform discharges with a predominant localization of language–related areas are more common in children with SLD. This data suggests that given the semiology of epileptiform discharges, the imposition of a therapeutic for deletion or modification of such discharges can lead to beneficial results.

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