Figure 4

Effect of delta-9-THC (interrupted blue line) and placebo (continuous green line) on the number of fluctuations (A), amplitude (B) and latency (C) of skin conductance response (SCR) during the different emotional valence conditions of the facial stimuli shown during fMRI. Significant effect of emotional valence (neutral vs fearful) (F = 10.69, d.f. = 1, p = 0.003) on the number of SCR fluctuations. No significant effect of drug on SCR fluctuations.