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Age-Related Changes in Risky Decision Making and Associated Neural Circuitry in a Rat Model.
| Content Provider | Europe PMC |
|---|---|
| Author | Orsini, Caitlin A. Pyon, Wonn S. Dragone, Richard J. Faraji, Mojdeh Wheeler, Alexa-Rae Pompilus, Marjory Febo, Marcelo Bizon, Jennifer L. Setlow, Barry |
| Copyright Year | 2023 |
| Abstract | Altered decision making at advanced ages can have a significant impact on an individual’s quality of life and the ability to maintain personal independence. Relative to young adults, older adults make less impulsive and less risky choices; although these changes in decision making could be considered beneficial, they can also lead to choices with potentially negative consequences (e.g., avoidance of medical procedures). Rodent models of decision making have been invaluable for dissecting cognitive and neurobiological mechanisms that contribute to age-related changes in decision making, but they have predominantly used costs related to timing or probability of reward delivery and have not considered other equally important costs, such as the risk of adverse consequences. The current study therefore used a rat model of decision making involving risk of explicit punishment to examine age-related changes in this form of choice behavior in male rats, and to identify potential cognitive and neurobiological mechanisms that contribute to these changes. Relative to young rats, aged rats displayed greater risk aversion, which was not attributable to reduced motivation for food, changes in shock sensitivity, or impaired cognitive flexibility. Functional MRI analyses revealed that, overall, functional connectivity was greater in aged rats compared with young rats, particularly among brain regions implicated in risky decision making such as basolateral amygdala, orbitofrontal cortex, and ventral tegmental area. Collectively, these findings are consistent with greater risk aversion found in older humans, and reveal age-related changes in brain connectivity. |
| Page Count | 15 |
| Journal | eNeuro |
| Volume Number | 10 |
| PubMed Central reference number | PMC9840382 |
| Issue Number | 1 |
| PubMed reference number | 36596593 |
| e-ISSN | 23732822 |
| DOI | 10.1523/ENEURO.0385-22.2022 |
| Language | English |
| Publisher | Society for Neuroscience |
| Publisher Date | 2023-01-12 |
| Access Restriction | Open |
| Rights License | This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. Copyright © 2023 Orsini et al. |
| Subject Keyword | aging decision making neuroimaging punishment rat risk taking |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Neuroscience |
