Fig. 4: Regional Correlates of Evidence Accumulation.

Stimulus-aligned and movement-aligned high-gamma activity for regions of interest compatible with evidence accumulation A–C Top: stimulus-aligned and movement-aligned high-gamma activity (in arbitrary units) averaged across patients for all EA-candidate channels. Dark bars indicate a significant relationship between high-gamma and move onset timing (p < 0.05, FDR-corrected). Blue lines correspond to averaged high-gamma for the 50% fastest trials, and grey lines for the 50% slowest. Shaded areas correspond to 95% CI. All analyses were performed on continuous decision times and binarized only for illustrative purposes. Bottom: regression coefficient as a function of time in the stimulus- and movement-aligned window. Light blue markers indicate the onset and offset times of significant effects, and the red marker indicates peak effects. D Latency analysis in the stimulus and move-aligned window for the three ROIs compatible with evidence accumulation. Conventions are similar to (A, C).