Activation maps for sexual stimulation. Shown above are 2D BOLD activation maps localized to coronal section of the segmented rat atlas for SRX251 and fluoxetine treatment in response to a novel receptive female. The red/yellow depicts the localization of significantly activated and interpolated voxels that exceed a 2% threshold above baseline. The color scale denotes the percent change in BOLD signal. The areas of activation for each experimental condition are composed of 10 male residents each. Below are 3D volumes showing the pattern of activation to a novel receptive female in the olfactory and reward systems following SRX251 and fluoxetine treatment. These 3D volumes of activation are composed of 10 subjects each.