On the structure of EEG development.
Two different descriptions of EEG maturation are compared: a broad-band spectral parameters (BBSPs) model and a recently developed xi-alpha (xi alpha) model. 'Developmental equations' were obtained for both parameter sets using 1 min, eyes closed EEG sample from 165 normal children (5-12 years old). At each age, the xi alpha parameter set described the average spectrum more closely than the BBSP developmental equations. Furthermore, a more detailed picture of changes of spectral shape with age is possible with the xi alpha model. A computer simulation illustrates the possible appearance of fixed frequency bands as a byproduct of inadequate statistical models.
Alvarez Amador
A
A
Neurosciences Branch, National Center for Scientific Research, Havana, Cuba.
Valdés Sosa
P A
PA
Pascual Marqui
R D
RD
Galan Garcia
L
L
Biscay Lirio
R
R
Bosch Bayard
J
J
D000375:Aging / Q000502:physiology; D001921:Brain / Q000502:physiology; D002648:Child; D002657:Child Development / Q000502:physiology*; D002675:Child, Preschool; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D012016:Reference Values