EEG Basic Wave Patterns of Healthy Children under the Age of 4 Years.
1972 Volume 4 Issue 2 Pages 114-128
Details
1972 Volume 4 Issue 2 Pages 114-128
Changes in the basic wave patterns of EEG were investigated on 349 healthy children under 4 years of age.
The basic waves of EEG, which obtained from the right occipital area, were divided into 5 or 10 bands according to frequency ranges by means of a conventional or specially prepared automatic analyzer, respectively.
Results were as follows: 1) δ waves, which dominated in energy percent in newborn, continuously decreased thereafter.
2) θ wave increased rapidly and reached the peak of their energy percent at 7 months of age. The peak remained as such until 3 years of age, and rapidly decreased in the energy percent thereafter
3) α waves increased linearly with advance of age particularly during the ages of 3 to 6.
4) The energy percent of β1 and β2 waves was observed to be very low in all of these ages.
5) The θ waves surpassed δ at 7 months of age and α did θ during 4 to 5 yeares of age.
