Short-term intraindividual variability of the posterior dominant alpha frequency in the electroencephalogram

There is no general consensus on the intraindividual variability of the posterior dominant alpha frequency; some researchers posit a static individual alpha background frequency, while others believe it to be dynamic. It has been declared as a stable clinical marker over longer periods of time and robust to repetitive cognitive interventions in healthy persons (Grandy et al., 2013). Regarding short-term variability, i.e. the variability of alpha power within a single record aside of inter-record variability, one study found a high correlation between both measures and no significant short-term variability of the posterior dominant alpha frequency after three different visual conditions (Hawkes and Prescott, 1973).

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