Resting State Alpha Oscillations and Inhibitory Cognitive Control:
Evidence from Stroop and Navon Tasks.
Previous work has indicated that individual differences in cognitive
performance can be predicted by characteristics of resting state alpha
oscillations, such as individual alpha frequency (IAF). Although IAF has
previously been correlated with cognitive functions such as memory,
attention, or mental speed, its relation to cognitive conflict
processing remains unexplored. The current work investigated the
relation between IAF and inhibitory cognitive control in two
well-established conflict tasks: Stroop and Navon task. In a sample of
55 healthy individuals, we found that IAF measured at rest was
significantly related to cognitive control in the Stroop conflict task.
Moreover, IAF was predictive of practice-dependent performance changes
in the Navon task. Notably, these effects were specific to IAF, but did
not extend to resting state power in the alpha band or theta band. Taken
together, our study reveals that the two computerized conflict tasks
assess different aspects of cognitive control that can be predicted
based on IAF extracted from a short resting state EEG measurement.