Fig. 4
From: Attentional tracking reduces cortical alpha oscillations
Topographic maps for the experiment. (a) Grand-averaged (N = 16) amplitude spectrum for each tracking condition (S2-E5, S6-E5, S6-E15, S12-E15, and S12-E30) at the Pz electrode. The light-gray-shaded area indicates the 8–12 Hz frequency range. The dark-gray-shaded area represents the within-participant 95% confidence intervals31. (b) Topographic maps of the grand-averaged alpha amplitude for each condition. (c) Subtraction maps illustrating the speed and eccentricity effects. Left panel (Speed effect): S6-E5 minus S2-E5 and S12-E15 minus S6-E15. Right panel (Eccentricity effect): S6-E15 minus S6-E5 and S12-E30 minus S12-E15. Sx-Ey: S refers to target speed (°/s), and E refers to target eccentricity (°). The color bar represents the amplitude of the EEG signal in microvolts (µV).
