Figure 3

Test color can be decoded from 8Av/45 activity. (A) We trained support vector machines to separate four different stimulus colors of the test stimulus based on time-locked 8Av/45 data. We estimated the performances of the classifiers with a 20-fold cross-validation procedure and contrasted the results with distributions of 500 runs of the same data, but with randomly shuffled trial labels. Here, we plot performance as the moving average in 28 ms sliding-windows with corresponding 95% confidence intervals. Chance performances are plotted as 99.9% confidence intervals of the shuffle distributions as overlapping, shaded areas. Above the x-axis, dots in corresponding colors indicate for which time-bins the decoding probability significantly differs from chance, evaluated at a α = 1e-4. The grey, shaded area illustrates the test stimulus duration. Orange, right-hand axes correspond to cumulative reaction-time distributions for each trial group and their corresponding target trials. Here, 100% equals to all target trials being terminated by the monkey. The orange, dashed line illustrates the fastest possible reaction time (300 ms, as defined by trial inclusion criteria). (B) Like A, but for the four cardinal motion directions.