| Autor: |
Kirk-Provencher KT; Department of Radiology, School of Medicine, University of Colorado Anschutz Medical Campus., Hakimi RH; Department of Radiology, School of Medicine, University of Colorado Anschutz Medical Campus., Andereas K; Department of Radiology, School of Medicine, University of Colorado Anschutz Medical Campus., Penner AE; Department of Psychiatry, School of Medicine, University of Colorado Anschutz Medical Campus., Gowin JL; Department of Radiology, School of Medicine, University of Colorado Anschutz Medical Campus. |
| Jazyk: |
angličtina |
| Zdroj: |
MedRxiv : the preprint server for health sciences [medRxiv] 2023 Jul 24. Date of Electronic Publication: 2023 Jul 24. |
| DOI: |
10.1101/2023.07.20.23292969 |
| Abstrakt: |
Alcohol use disorder is 50% heritable; those with positive family histories represent an at-risk group within which we can test anticipation of threat and reward prior to development of harmful alcohol use. We examined neural correlates of the interaction between family history, threat anticipation (unpredictable threat), and monetary reward anticipation, in a sample of healthy young adults with ( n =31) and without ( n =44) family histories of harmful alcohol use. We used a modified Monetary Incentive Delay task with sustained threat of hearing a scream during fMRI. We examined the interaction between family history group, anticipation of threat, and anticipation of reward in the insula, nucleus accumbens, and medial prefrontal cortex. Family history positive individuals showed less activation in the left insula during both safe and threat blocks compared to family history negative individuals ( p =0.005), but the groups did not differ as a function of unpredictable threat ( p >0.70). We found an interaction ( p =0.048) between cue and group in the right nucleus accumbens where the family history positive group showed less differentiation to the anticipation of gaining $5 and losing $5 relative to gaining $0. The family history positive group also reported less excitement for trials to gain $5 relative to gaining $0 ( p <0.001). Prior to chronic heavy alcohol use, individuals with, relative to without, enriched risk may have diminished reward processing via both neural and behavioral markers to potential rewarding and negative consequences. Neural response to unpredictable threat may not be a contributing factor to risk at this stage. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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