Fig. 3.

Conditioning imaging task and habituation. A. Imaging task. During conditioning, subjects viewed six colored patterns followed by a Sexual, Monetary or Neutral image. The extinction phase followed, during which the conditioned stimulus was shown without the unconditioned stimulus. B. Habituation. Habituation of dorsal anterior cingulate (dACC) activity in compulsive sexual behavior (CSB) subjects versus healthy volunteers (HV) to repeated Sexual versus Neutral images. The image shows the comparison of the first and last half of the trials. C. Slope and intercept of dACC habituation. The graphs show the slope or degree of habituation (left graph) of beta values of the dACC in CSB and HV individuals and the intercept or initial activity of CSB versus HV (right graph) of Sexual – Neutral (Sex) and Monetary – Neutral (Money) images. *Valence and Group-by-Valence effects p < 0.05; **Valence effect p < 0.05.