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Frontiers in psychiatry
By Zhao C, Song J, Wang H and 2 others.
Adolescence is marked by heightened vulnerability to anxiety which can impair decision-making under uncertainty. The underlying neural oscillatory network-level mechanisms in anxious adolescents require further elucidation.
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We recruited 40 adolescents (20 adolescents with clinically diagnosed anxiety disorders, 20 matched controls). Participants performed a gain/loss version of the Balloon Analogue Risk Task (BART) during EEG recording. Behavioral data, time-frequency EEG power in beta (13-30 Hz) and theta (4-7 Hz) bands, and phase-based functional connectivity were analyzed.
Anxious adolescents exhibited significant behavioral avoidance, reflected in fewer pump attempts and lower BART scores compared to controls. EEG analysis revealed elevated beta-band power during gain decisions and enhanced beta-band occipito-temporal connectivity in the anxious group. In loss contexts, anxious adolescents showed increased theta-band parieto-temporal connectivity.
Adolescent anxiety is associated with a generalized avoidance pattern during uncertain decision-making, characterized by distinct neural dynamics. Beta-band changes in gain contexts may reflect heightened vigilance, while theta-band connectivity in loss contexts may indicate amplified threat monitoring. These neural signatures may represent candidate neurophysiological signatures of anxiety-related alterations in decision-making under uncertainty, warranting further validation in longitudinal and predictive studies.
Published in Frontiers in psychiatry. The abstract is shown as published and remains the work of its authors; read the full article at the source.
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