Speech development and psychophysiological features of six years old dizygotic twins
The aim of the present study is to reveal relation between the level of speech development, psychophysiological features of twins and their number at birth. Subjects of the study are ten dizygotic twins. The first and the second twins at the age of six pronounce various replicas in dialogue with adults. Replicas of one word or simple phrase are prevailing. Differences between the first and the second child are revealed by the meanings of vowel formant frequencies, the level of reading mastering, frequency of alfa rhythm and spectral power of theta rhythm. Regular alfa rhythm is determined in children who read the whole text and understand the meaning. Children who read separate syllables, some words by syllables or call only letters, have slow rhythms in electroencephalogram. Relation between physiological characteristics at birth, level of speech development and psychophysiological features of twins is established. Refs 16. Figes 4. Tables 3.
twins, speech, EEG, reading, psychophysiological features
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