Abstract
Decades of psychosis research highlight the prevalence and the clinical significance of negative emotions, such as fear and anxiety. Translational evidence demonstrates the pivotal role of the amygdala in fear and anxiety. However, most of these approaches have used hypothesis-driven analyses with predefined regions of interest. A data-driven analysis may provide a complimentary, unbiased approach to identifying brain correlates of fear and anxiety. The aim of the current study was to identify the brain basis of fear and anxiety in early psychosis and controls using a data-driven approach. We analyzed data from the Human Connectome Project for Early Psychosis, a multi-site study of 125 people with psychosis and 58 controls with resting-state fMRI and clinical characterization. Multivariate pattern analysis of whole-connectome data was used to identify shared and psychosis-specific brain correlates of fear and anxiety using the NIH Toolbox Fear-Affect and Fear-Somatic Arousal scales. We then examined clinical correlations of Fear-Affect scores and connectivity patterns. Individuals with psychosis had higher levels of Fear-Affect scores than controls (p < 0.05). The data-driven analysis identified a cluster encompassing the amygdala and hippocampus where connectivity was correlated with Fear-Affect score (p < 0.005) in the entire sample. The strongest correlate of Fear-Affect was between this cluster and the anterior insula and stronger connectivity was associated with higher Fear-Affect scores (r = 0.31, p = 0.0003). The multivariate pattern analysis also identified a psychosis-specific correlate of Fear-Affect score between the amygdala/hippocampus cluster and a cluster in the ventromedial prefrontal cortex (VMPFC). Higher Fear-Affect scores were correlated with stronger amygdala/hippocampal-VMPFC connectivity in the early psychosis group (r = 0.33, p = 0.002), but not in controls (r = −0.15, p = 0.28). The current study provides evidence for the transdiagnostic role of the amygdala, hippocampus, and anterior insula in the neural basis of fear and anxiety and suggests a psychosis-specific relationship between fear and anxiety symptoms and amygdala/hippocampal-VMPFC connectivity. Our novel data-driven approach identifies novel, psychosis-specific treatment targets for fear and anxiety symptoms and provides complimentary evidence to decades of hypothesis-driven approaches examining the brain basis of threat processing.
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Data availability
Data presented in the present work was collected and minimally processed by the Human Connectome Project, specifically the early psychosis subgroup and sites. Statistics, analysis scripts, and figures are available from the corresponding author upon reasonable request.
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Acknowledgements
The authors wish to thank the patients and their families for participation in this study. We also thank the Human Connectome Project for making their data accessible and assisting with database management.
Funding
This work was supported by National Institutes of Health (NIH) grants R01MH127018 to Drs. Feola and Blackford, 1R01MH120588-01 A1 to Dr. Breier, R01 MH117012 to Dr. Lewandowski, U01 MH109977 to Drs. Breier and Shenton, R01 MH116170 to Dr. Brady and KL2TR002245 and K23DA059690 to Dr. Ward.
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BF, MC, SB, DH, KL, DO, AB, MS, RB, JB, and HW initiated and designed the research. BF, AB, KF, and HBW performed data analysis. BF, SH, RB, JB, and HBW interpreted the results. BF, JB, and HBW wrote the manuscript. BF and HBW prepared the figures. All authors edited the manuscript and approved the final submission.
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Feola, B., Beermann, A., Manzanarez Felix, K. et al. Data-driven, connectome-wide analysis identifies psychosis-specific brain correlates of fear and anxiety. Mol Psychiatry (2024). https://doi.org/10.1038/s41380-024-02512-w
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DOI: https://doi.org/10.1038/s41380-024-02512-w