Figure 4.

Space-by-time decomposition for surprise/fear distinction. The space-by-time decomposition identified two two temporal components (see waveforms in top) and five AU components (see color-coded faces and AU labels). Color-coded bars (blue = surprise, cyan = fear, with bright colors representing activations of the first temporal component and darker colors representing activations of the second temporal component) show the activation coefficients (trial averages ± standard error of the mean) that linearly combine each temporal component with each AU component. Reported percentages correspond to the average decoding accuracy (percent correct) across observers of the spatial components (left), temporal components (top), and space-by-time linear combinations of components (on top of each color-coded pair of bars). Chance-level decoding is 50%.