title: Developmental transition of EEG spectra to alpha band in a sample of children with developmental disabilities.
abstract: Developmental transition of EEG spectra to alpha band of 14 children with developmental disabilities (from 7 yr. and 3 mo. to 16 yr. and 1 mo. of age at the first EEG recording: M= 13.2, SD=2.6; 6 girls and 8 boys) was studied by auto-power spectrum analysis longitudinally. The results showed the mean age (14.1 yr. to 14.8 yr. in the four regions of the frontal, central, parietal, and occipital regions) for subjects and their mean frequency (4.2 Hz to 4.7 Hz in the 4 regions) at which EEG shift started from theta band, and those means (15.1 yr. to 15.7 yr. and 9.5 Hz to 9.6 Hz in the 4 regions) at which EEG shift reached the alpha band. Prior EEG research on healthy children has shown that approximately 10 years of age is critical for developmental transition of EEG spectra to alpha frequencies. It is suggested that the present data showed a delay of this critical age for this sample of children with developmental disabilities relative to 10 years for healthy children reported by Katada, et al. and Benninger, et al.
authors.affiliation: Faculty of Human Development, University of Toyama, 3190 Gofuku, Toyama City, Toyama Prefecture 930-8555, Japan. shibagak@edu.u-toyama.ac.jp
authors.forename: Masamitsu
authors.initials: M
authors.lastname: Shibagaki
authors.forename: Megumi
authors.initials: M
authors.lastname: Mizuhashi
authors.forename: Kana
authors.initials: K
authors.lastname: Miyajima
authors.forename: Yu
authors.initials: Y
authors.lastname: Yoshie
authors.forename: Chiaki
authors.initials: C
authors.lastname: Hiraki
authors.forename: Mari
authors.initials: M
authors.lastname: Yamada
authors.forename: Eriko
authors.initials: E
authors.lastname: Yamashita
authors.forename: Ai
authors.initials: A
authors.lastname: Yamada
mesh_terms: D000293:Adolescent; D000513:Alpha Rhythm; D002648:Child; D002658:Developmental Disabilities; D004569:Electroencephalography / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male