On the structure of EEG development

Neurosciences Branch, National Center for Scientific Research, Havana, Cuba.
Electroencephalography and Clinical Neurophysiology 08/1989; 73(1):10-9. DOI: 10.1016/0013-4694(89)90015-1
Source: PubMed


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.

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    • "Before the advent of modern computerized technologies, early developmental studies used laborious visual analysis for both longitudinal (Lindsley, 1938; Smith, 1938a; Smith, 1938b) and cross-sectional (Eeg-Olofsson, 1971; Petersen & Eeg-Olofsson, 1971) studies of children, adolescents , and adults (for a comprehensive review of these classic studies see Petersen, Sellden, & Eeg-Olofsson, 1975). These studies and later replications using computer-aided quantitative methods (e.g., Alvarez Amador et al., 1989; John, Prichep, Fridman, & Easton, 1988; Matousek & Petersen, 1973b; Petersen et al., 1975) revealed maturational trends across childhood that continued into adolescence . Few studies have focused specifically on adolescent EEG maturation (Eeg-Olofsson, 1971; Gasser, Jennen-Steinmetz, et al., 1988; Gasser, Verleger, Bacher, & Sroka, 1988), although characteristic patterns of spontaneous EEG activity over adolescent development have been reported in numerous studies spanning larger age ranges (Dustman et al., 1999; Henry, 1944; Matousek & Petersen, 1973a; Matousek & Petersen, 1973b; Matsuura et al., 1985; Petersen & Eeg-Olofsson, 1971; Petersen et al., 1975; Whitford et al., 2007). "
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