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Causal network localization of brain stimulation targets for trait anxiety.
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Causal network localization of brain stimulation targets for trait anxiety. Research square Siddiqi, S. H., Klingbeil, J., Webler, R., Kratter, I. H., Blumberger, D. M., Fox, M. D., George, M. S., Grafman, J. H., Pascual-Leone, A., Pines, A. R., Richardson, R. M., Talati, P., Vila-Rodriguez, F., Downar, J., Hershey, T., Black, K. J. 2024Abstract
Transcranial magnetic stimulation (TMS) and deep brain stimulation (DBS) can treat some neuropsychiatric disorders, but there is no consensus approach for identifying new targets. We localized causal circuit-based targets for anxiety that converged across multiple natural experiments. Lesions (n=451) and TMS sites (n=111) that modify anxiety mapped to a common normative brain circuit (r=0.68, p=0.01). In an independent dataset (n=300), individualized TMS site connectivity to this circuit predicted anxiety change (p=0.02). Subthalamic DBS sites overlapping the circuit caused more anxiety (n=74, p=0.006), thus demonstrating a network-level effect, as the circuit was derived without any subthalamic sites. The circuit was specific to trait versus state anxiety in datasets that measured both (p=0.003). Broadly, this illustrates a pathway for discovering novel circuit-based targets across neuropsychiatric disorders.
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