Amygdala activation during backward masking trials.

<p>Statistical maps of a priori regions of interest defined using the Talairach Atlas and superimposed on a composite average of 24 anatomical T1 image sets normalized to Talairach space. Note bilateral amygdala activation in both individuals with ASD (a.) and age-matched controls (b.) during the presentation of subthreshold anxious face stimuli. Images are presented according to radiological convention. Mean peristimulus plots of the average estimated hemodynamic responses to subthreshold anxious face images are shown (c.) for the right and left amygdala in individuals with ASD and controls. The control group is shown in red, and the ASD group is shown in blue.