Impact of cannabis use on prefrontal and parietal cortex gyrification and surface area in adolescents and emerging adults.

3.3 Surface area results 3.3.1 Cannabis group After controlling for WRAT-4 Reading scaled score, age, gender, past year alcohol use, cotinine levels, and current depressive symptoms, cannabis users demonstrated significantly reduced SA in the left ventral medial [ t (60) = −2.5, beta = −.35, p = .02; FDR corrected p = .09], and left ventral lateral PFC [ t (60) = −2.7, beta = −.32, p = .008; FDR corrected p = .09], although these findings were only marginally significant after correcting for multiple comparisons.

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