Changes in Brain Activity (Functional MRI Study) Before and After Behavioral Therapy of Height Phobia

The purpose of this study is to investigate the effects of in vivo exposure therapy on the functional brain activity of subjects with height phobia using a fear provocation paradigm. We expect differential activation of the fear circuitry in height phobics compared to non-phobic controls, and that successful behavioral therapy will normalize the heightened fear response in height phobia.