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Chunk #2 — Introduction

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Frontal Theta Event-Related Oscillations During a Continuous Performance Test: The Influence of Trauma Type and Fluid Intelligence Polygenic Score.
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Electrophysiological measures measured from electroencephalogram during cognitive and behavioral tasks, like event‐related potentials (ERPs) and event‐related oscillations (EROs), are used to investigate brain function during tasks in trauma‐exposed individuals (Lobo et al. 2015). ERP components (e.g. P3(00)) provide time‐domain measures that have been useful as biomarkers for psychopathology. However, P3 is not a unitary phenomenon, but an amalgam of different frequency bands emanating from different brain regions, representing several complex cognitive processes involved in P3. Time‐frequency ERO measures tease apart ERP P3 into an earlier frontal theta (3.0–7.5 Hz, 200–400 ms) and later posterior delta (1.0–3.5 Hz, 300–700 ms), which serve different aspects of complex cognitive processing in P3, providing more specific measures of aspects of brain function (Porjesz and Rangaswamy 2007). Frontal theta has been associated with executive functions, such as response inhibition, and frontal theta EROs during response inhibition have been used as biological markers to identify and understand neurocognitive mechanisms of mental health disorders, such as alcohol use disorders (AUDs) (Kamarajan et al. 2006). Kamarajan et al. (2006) showed lower ERO power in the no‐go condition of