ERIC Number: EJ950069
Record Type: Journal
Publication Date: 2011-Dec
Abstractor: As Provided
Reference Count: 0
Frontal Oscillatory Dynamics Predict Feedback Learning and Action Adjustment
van de Vijver, Irene; Ridderinkhof, K. Richard; Cohen, Michael X.
Journal of Cognitive Neuroscience, v23 n12 p4106-4121 Dec 2011
Frontal oscillatory dynamics in the theta (4-8 Hz) and beta (20-30 Hz) frequency bands have been implicated in cognitive control processes. Here we investigated the changes in coordinated activity within and between frontal brain areas during feedback-based response learning. In a time estimation task, participants learned to press a button after specific, randomly selected time intervals (300-2000 msec) using the feedback after each button press (correct, too fast, too slow). Consistent with previous findings, theta-band activity over medial frontal scalp sites (presumably reflecting medial frontal cortex activity) was stronger after negative feedback, whereas beta-band activity was stronger after positive feedback. Theta-band power predicted learning only after negative feedback, and beta-band power predicted learning after positive and negative feedback. Furthermore, negative feedback increased theta-band intersite phase synchrony (a millisecond resolution measure of functional connectivity) among right lateral prefrontal, medial frontal, and sensorimotor sites. These results demonstrate the importance of frontal theta- and beta-band oscillations and intersite communication in the realization of reinforcement learning.
Descriptors: Brain, Neurological Organization, Cognitive Processes, Feedback (Response), Learning, Reinforcement
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A