Gasser T, Jennen-Steinmetz C, Sroka L, Verleger R, Möcks J
Zentralinstitut für Seelische Gesundheit, Mannheim, F.R.G.
Electroencephalogr Clin Neurophysiol. 1988 Feb;69(2):100-9. doi: 10.1016/0013-4694(88)90205-2.
Topographic aspects of EEG development of normal children and adolescents from 6 to 17 years are investigated with respect to various spectral parameters. The topographic distribution of spectral band power does not change between hemispheres across age. Changes take place, however, in the antero-posterior dimension. For the bands theta, alpha 1 and alpha 2 (and less so for delta) maturation starts at posterior derivations and ends at anterior derivations. For the band beta 2 (and to some extent also for beta 1), development progresses from Cz to Pz and further to occipital, lateral, central and frontal derivations. Principal component analysis (PCA) leads to a more parsimonious and better interpretable description of broad-band power and of its topographic distribution. Broad-band coherences increase with age, though to a modest degree. The different magnitudes of coherence between different regions can be largely accounted for by the interelectrode distances. Coherences, too, can be described in a more parsimonious and better interpretable way via PCA. The 3 components extracted reflect firstly the overall level of coherence, secondly the coherences of the occipital regions with all other regions and thirdly antero-posterior versus left-right coherences.
针对6至17岁正常儿童和青少年脑电图（EEG）发育的地形学方面，研究了各种频谱参数。跨年龄半球之间频谱带功率的地形分布没有变化。然而，在前后维度上发生了变化。对于θ、α1和α2频段（对于δ频段变化较小），成熟从后位导联开始，在前位导联结束。对于β2频段（在某种程度上对于β1频段也是如此），发育从中央点（Cz）进展到顶枕点（Pz），并进一步发展到枕部、外侧、中央和额部导联。主成分分析（PCA）能够更简洁且更易于解释宽带功率及其地形分布。宽带相干性随年龄增加，尽管幅度不大。不同区域之间不同程度的相干性在很大程度上可由电极间距离来解释。相干性同样可以通过PCA以更简洁且更易于解释的方式来描述。提取的三个成分首先反映相干性的总体水平，其次反映枕部区域与所有其他区域的相干性，第三反映前后相干性与左右相干性。
