Neuroimaging has extensively contributed to the identification of the neurobiological basis of anxiety and the pathophysiological mechanisms underlying anxiety disorders. Studies in human models of anxiety, as well as investigations in anxiety disorder patients, consistently demonstrated the pathophysiological role of a ‘fear network’ comprising the amygdala, insula, medial prefrontal cortex, and anterior cingulate cortex. This chapter reviews the main neuroimaging findings from human models of anxiety disorders such as fear conditioning, fear generalization, and pharmacologically induced panic attacks. Moreover, the chapter summarizes evidence from research in patients aiming to identify the neural processes underlying the pathophysiology of clinically relevant anxiety disorders. Finally, the chapter provides an overview on neurobiological aspects of successful therapeutic interventions, which might prospectively contribute to the refinement of existing approaches, the prediction of the success of certain treatment strategies in individual patients, and the development of more effective options for the treatment of anxiety disorders.
The Role of Caregiver Major Depression in the Relationship Between Anxiety Disorders and Asthma Attacks in Island Puerto Rican Youth and Young Adults
