期刊
PSYCHOPHYSIOLOGY
卷 50, 期 6, 页码 570-582出版社
WILEY
DOI: 10.1111/psyp.12043
关键词
EEG; Alpha frequency; Reliability; Stability; Trait
资金
- Max Planck Society [M.FE.A.BILD0005]
- Sofja Kovalevskaja Award
- German Research Foundation (DFG) [KFG 163]
- BMBF (CAI)
- Gottfried Wilhelm Leibniz Award of the DFG
The individual alpha frequency (IAF) of the human EEG reflects systemic properties of the brain, is highly heritable, and relates to cognitive functioning. Not much is known about the modifiability of IAF by cognitive interventions. We report analyses of resting EEG from a large-scale training study in which healthy younger (2031 years, N=30) and older (6580 years, N=28) adults practiced 12 cognitive tasks for approximate to 100 1-h sessions. EEG was recorded before and after the cognitive training intervention. In both age groups, IAF (and, in a control analysis, alpha amplitude) did not change, despite large gains in cognitive performance. As within-session reliability and test-retest stability were high for both age groups, imprecise measurements cannot account for the findings. In sum, IAF is highly stable in healthy adults up to 80 years, not easily modifiable by cognitive interventions alone, and thus qualifies as a stable neurophysiological trait marker.
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