Average decoding accuracy at each time point relative to motion onset. Decoding was applied either to alpha-band activity (a, c) or sustained event-related potential (ERP) activity (b, d), and the decoding was performed separately for the 25.6% motion coherence (a, b) and for the 51.2% motion coherence (c, d). Time 0 represents motion onset, and time 1.5 represents motion offset. The gray regions represent clusters of time points for which the decoding accuracy was greater than chance after correction for multiple comparisons. The orange shading indicates ±1 SEM.