[EEG maturation and hemispheric functional asymmetry in 5- to 7-year-old children with general speech retardation].
EEG and a hand-eye functional asymmetry (FAS) profile have been compared in children with general speech retardation (GSR, 45 cases) and in normal children (45 cases) aged 5-7 years. The least EEG deviations have been noted in healthy full right-handed cases. Some delay in EEG maturation as well as existence of pathologic activity foci mostly in associative cortical brain areas have been noted in healthy non-right-handed and in GSR children. The most pronounced EEG disturbances have been observed in GSR children, 40% of whom were ambidextrous, left-handed and cross-lateralized children. The percentage of non-right-handed cases in the healthy group was less and decreased up to the age of 7 years. Prenatal, perinatal and 1st year postnatal pathology have been revealed in 86.6% of children in GSR group (in comparison to 11.1% in normal control group). Such pathology is suggested to be the reason of dysontogenesis and probably to be involved in brain electrical activity maturation, in FAS profile and in speech development.
Puchinskaia
L M
LM
Sungurova
T A
TA
D002648:Child; D002675:Child, Preschool; D004292:Dominance, Cerebral; D004569:Electroencephalography / Q000379:methods; D007839:Functional Laterality; D006801:Humans; D008297:Male; D011597:Psychomotor Performance; D013064:Speech Disorders / Q000175:diagnosis / Q000503:physiopathology*
Formirovanie EEG i funktsional'naia asimmetriia polushariĭ u deteĭ 5--7 s obshchim nedorazvitiem rechi.