Fig. 3.
Grand average P3 waveform: Covert visual attention task. Grand average P3 waveform observed in covert visual attention task, differentiated by age and dose (only low and placebo doses used). Data shown were obtained from occipital midline scalp electrode, with similar patterns obtained at the midline parietal site. For older adults, alcohol significantly dampened P3 amplitude (P =0.048) and extended P3 latency (P <0.001), relative to placebo. Younger adults were not impacted by dose. Figure republished with permission from Lewis, B., Boissoneault, J., Gilbertson, R., Prather, R., & Nixon, S.J. (2013). Neurophysiological correlates of moderate alcohol consumption in older and younger social drinkers. Alcoholism, Clinical and Experimental Research 37(6), 941–951; Copyright John Wiley and Sons, Inc.