Abstract
The role of the cerebral subcortical structures in speech formation was studied by analyzing the data on the comprehensive examination of children with alalia. Alalia is a systemic underdevelopment of speech in which all the speech components are disordered. The assessment of the functional state of the brain structures by means of EEG allowed us to identify two groups differing in the pattern of changes in bioelectrical activity (BEA): group 1 with α rhythm changes and/or local BEA changes, predominantly in the left hemisphere, and group 2 with predominantly generalized EEG changes of brainstem origin. Integrated analysis of clinical data allowed us to suggest that a lesion of the left hemisphere subcortical structures and the brainstem divisions underlies the formation of alalia. The analysis of the perinatal risk factors allowed us to advance the hypothesis that damage to the subcortical structures was linked to antenatal complications in the first half of pregnancy.
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Original Russian Text © I.P. Lukashevich, S.M. Popova, V.M. Shklovsky, 2011, published in Fiziologiya Cheloveka, 2011, Vol. 37, No. 5, pp. 41–45.
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Lukashevich, I.P., Popova, S.M. & Shklovsky, V.M. The role of damage to the cerebral subcortical divisions in the formation of alalia. Hum Physiol 37, 550–554 (2011). https://doi.org/10.1134/S0362119711050136
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DOI: https://doi.org/10.1134/S0362119711050136