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On the structure of EEG development

1989; Elsevier BV; Volume: 73; Issue: 1 Linguagem: Inglês

10.1016/0013-4694(89)90015-1

1872-6380

Alfredo Álvarez Amador, Pedro A. Valdés‐Sosa, Roberto D. Pascual‐Marqui, Liliana García, Rolando Biscay Lirio, Jorge Bosch‐Bayard,

Neural dynamics and brain function

Two different descriptions of EEG maturation are compared: a broad-band spectral parameters (BBSPs) model and a recently developed xi-alpha (ξα) 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 ξα 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 ξα model. A computer simulation illustrates the possible appearance of fixed frequency bands as a byproduct of inadequate statistical models.