1. A, Grand averages of response-locked ERPs at midline electrodes in participants homozygous for the C and T allele (DRD4–521).
A, Grand averages of response-locked ERPs at midline electrodes in participants homozygous for the C and T allele (DRD4–521). Depicted are ERPs for correct trials (dashed lines), stop-error trials (solid thick lines), and the difference waveforms (solid thin lines). For illustration the data were bandpass filtered (bandpass filter, 2–8 Hz). B, Isovoltage maps of the difference waveform for the time window 0–130 ms in the homozygotes for the C and T allele (maximum and minimum values in microvolts are −5.5 and 0.5). C, Mean trough-to-peak amplitudes at Fz and Cz for the four different groups with the respective SEs.
Ulrike M. Krämer et al. J. Neurosci. 2007;27:
©2007 by Society for Neuroscience