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Although evidence exists for abnormal brain function across various
anxiety disorders, direct comparison of neural function across diagnoses
is needed to elicit abnormalities common across disorders and those
distinct to a particular diagnosis.
To delineate common and distinct abnormalities within generalised anxiety
(GAD), panic and social anxiety disorder (SAD) during affective
Fifty-nine adults (15 with GAD, 15 with panic disorder, 14 with SAD, and
15 healthy controls) underwent functional magnetic resonance imaging
while completing a facial emotion matching task with fearful, angry and
Greater differential right amygdala activation to matching fearful
v. happy facial expressions related to greater
negative affectivity (i.e. trait anxiety) and was heightened across all
anxiety disorder groups compared with controls. Collapsing across
emotional face types, participants with panic disorder uniquely displayed
greater posterior insula activation.
These preliminary results highlight a common neural basis for clinical
anxiety in these diagnoses and also suggest the presence of
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