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Chunk #18 — Method — Data Reduction — Time-domain components: FRN and P300

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Externalizing psychopathology and gain-loss feedback in a simulated gambling task: dissociable components of brain response revealed by time-frequency analysis.
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The time-domain (TD) FRN component was defined as the maximum negative deflection in the ERP waveform occurring between 203.13 and 328.13 ms post stimulus onset; the P300 was defined as the maximum positive deflection occurring between 250 and 601.56 ms post stimulus onset (with ms corresponding to bins of 128 Hz re-sampled signal). Electrode sites FCz and Cz were most proximal topographically to the center of FRN and P300 Gain-Loss condition differences, respectively, and were thus employed in the TD statistical analyses reported below.