EEG asymmetry and anxiety

This study examined a relationship between anxiety scale score and two types of EEG asymmetry: resting state and fear-induced state. 30 adults who have no psychiatric history were participated, and their EEGs were recorded while resting and watching emotion-inducing film clips respectively. The result was obtained that there is no significant difference in resting state EEG asymmetry between high and low anxiety, but there is a meaningful difference in fear-induced frontal EEG asymmetry between two anxiety levels. The group with high anxiety level shows greater EEG asymmetry. We discussed the way how this result could be applied to anxiety treatment.