Figure 1.

N‐back behavioral performance and network activation per memory load level in heavy cannabis users and controls. (A) 0‐back, 1‐back, and 2‐back average group accuracy expressed as proportion correct responses minus errors with standard deviation error bars. (B) 0‐back, 1‐back, and 2‐back median group RT of correct responses with standard deviation error bars. (C) Working‐memory network activity during 1‐back and 2‐back expressed as percent signal change of 0‐back with standard deviation error bars. *P < 0.05, **P < 0.001.