The effects of norepinephrine ablation on behavior during a probabilistic switching task in male and female mice
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Citation
Abstract
The process of selecting an action, assessing it, and storing the outcome to guide future responses involves the basal ganglia and extended circuits like the Lateral Habenula. Activity in the Lateral Habenula is observed in various human neurological disorders where action selection is impaired. Additionally, the Lateral Habenula likely functions as a key hub for the interaction between stress and decision-making. Elevated levels of norepinephrine, which originates in the locus coeruleus, are a hallmark of the stress response and serve as signaling molecules in the brain. In the Lateral Habenula, norepinephrine is known to play a role in both arousal and anxiety states. However, the precise mechanisms underlying the Lateral Habenula’s function and its interaction with norepinephrine during action evaluation are not yet fully understood. Gaining insight into Lateral Habenula function in action selection is crucial for understanding how disruptions in these circuits contribute to dysfunction and disease. A variation of the two-armed bandit behavioral task that allows for the manipulation and observation of norepinephrine circuit dynamics in vivo during a thirst-motivated was used to determine if norepinephrine signaling is necessary for port switching and retention of the task due to its role in attention allocation and working memory. The study demonstrated some changes; however, the results would likely become more pronounced with larger sample sizes, which could enhance the statistical power and precision of the findings.
Description
2025
License
Attribution-NonCommercial-ShareAlike 4.0 International