Figure 2 .

Prestimulus beta events are associated with lower near-threshold detection probabilities in human SI. (A) Example trial with a beta event in (i) the time-domain with beta event in black (stereotypical beta cycle is highlighted in green) and (ii) as a wavelet spectrogram with event timespan highlighted. (B) Detection probabilities for all participants. Boxes show interquartile ranges. Orange bars and triangles represent median and comparison intervals respectively; see Methods. A beta event with >6 median power at 20–22 Hz in the prestimulus period reduces detection probability (P < 0.01; Wilcoxon rank-sum test) by ~10% on average, and on an individual basis, a prestimulus beta event alters detection probability in a range of −28% to +7%.