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. Author manuscript; available in PMC: 2012 Mar 19.
Published in final edited form as: Am J Psychiatry. 2012 Feb;169(2):205–212. doi: 10.1176/appi.ajp.2011.11010006

FIGURE 3.

FIGURE 3

Event-Related Percent BOLD Signal Chang e Extracted From the Putamen Region of Interest Among Adolescents With Social Phobia or Generalized Anxiety Disorder and Age-Matched Healthy Comparison Subjects a

a The top graph depicts a significant group-by-magnitude interaction effect (F=3.94, df=2, 55, p=0.03). Within the social phobia group, but not the generalized anxiety disorder or healthy comparison group, putamen activation increased as incentive magnitude increased from small to medium (p=0.02) and small to large (p=0.001). The bottom graph depicts a significant group-by-valence interaction effect (F=3.21, df=4, 55, p<0.05). Within the generalized anxiety disorder group, but not the social phobia or healthy comparison group, putamen activation was significantly greater on gain versus loss trials (p=0.001). Error bars represent the standard error of the mean.