Figure S2: Reproducibility across repetitions

A. For each electrode and each object, we computed the correlation coefficient between the IFP responses across repetitions (Pearson correlation of the point-by-point IFP

responses between 0 and 800 ms post-stimulus after resampling with a 20 ms rolling average window). In this plot, each column shows one electrode, the dashed vertical lines separate electrodes in different subjects. For each electrode, the gray bars show the average correlation coefficient across all objects and the black curve shows the correlation coefficient for the best object (i.e. the object yielding the highest correlation coefficient). B. To assess the statistical significance of the correlation coefficients in part A, we computed the null expected value by performing 500 random shuffles of the object labels. The y-axis shows the z-score for the average correlation coefficient compared to this null hypothesis. The y-axis was cut off at z=6 for display purposes but there were several electrodes with z>6. The arrows point to the example electrodes shown in Figures 1A, 1F and 4 in the main text.