Comparative analysis of the EEG in babies in the first month of life with gestation periods of 30-42 weeks.

The aim of the present work was to compare measures of the power spectra, indexes, and coherence of the EEG in term and preterm infants in the first month of life. Six groups of children were investigated, born at 1) 30-32, 2) 33-34, 3) 35-36, 4) 37-38, 5) 39-40, and 6) 41-42 weeks of gestation; there were 10 in each group. The power of the delta frequencies was maximal in group 5.

[Comparative analysis of the infant EEG at gestation term 30-42 weeks].

The research involved comparison of characteristics of the power spectrum, index, coherence of the EEG at preterm and full-term infants of the first month of life. 6 groups of children are surveyed: (1) 30-32, (2) 33-34, (3) 35-36, (4) 37-38, (5) 39-40, (6) 41-42 weeks of gestation; each group consisted of 10 children. Capacity of delta frequencies was high in the 5th group.

[A correlation of EEG characteristics of pregnant women with the level of their anxiety].

It has been shown that the EEG of pregnant women with high anxiety level is characterized by a lower occipital alpha and theta rhythm spectral power if compared to the EEG of women with low anxiety level. The frequency of the alpha rhythm of their EEG was reliably higher. Pregnant women with high anxiety level with a pregnancy interruption threat diagnosis have an essentially lower occipital alpha rhythm spectral power than women of this group without such a diagnosis.

[Characteristics of the EEG power and coherent structure of term and premature children during the first postnatal year].

Objective of the study involved characteristics of the spectre of the EEG power and coherent structure in children of different degree of maturity in the first month of their postnatal development. 32 children were divided into three groups: 1) 38-41 weeks (11 children); 2) 34-36 weeks (12 children); 3) 30-33 weeks (9 children). At the moment of the study the children's chronological age was as follows: in the 1st and 2nd groups--19 +/- 1, in the 3rd group--30 +/- 4 days.