Fig. 7.

Contralateral α power suppression measured in experiment 2. A: lateralized α power suppression for matched distractor (top), one-distractor (middle), and eight-distractor (bottom) conditions. The waveforms are the difference waves (contralateral − ipsilateral) for each set size, and the time windows for the stimulus event and CDA are highlighted accordingly. The bar graphs show the mean lateralized α power suppression during the CDA window for each set size. B: time course of the contralateral α power suppression for matched, one-distractor, and eight-distractor conditions averaged across all set sizes. The events and time windows are highlighted as in A (with the addition of the test stimulus presentation shown in turquoise). Error bars on the bar graphs represent SEs.