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腹向向胆神经间神经管调节决策或运动冲动性在学习和生物学性别之间不同
Tristan J Hynes1, Chloe S Chernoff2, Kelly Hrelja2
1Graduate Program in Neuroscience, Department of Psychology, Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver V6T 1Z3, Canada th686@cam.ac.uk cwinstanley@psych.ubc.ca.
概括
静脉带状胆固醇内神经元 (vsCINs) 在学习过程中不同调节风险承担和冲动性,而在老鼠博任务 (rGT) 中表现稳定. 当行为稳定时,它们的激活会影响冲动控制,但在任务获取过程中会影响奖励学习.
科学领域:
- 神经科学是一个神经科学.
- 行为科学 行为科学
- 决策 - 决策 - 决策 - 决策
背景情况:
- 腹腔条状多巴胺 (DA) 对于风险/奖励决策和冲动控制至关重要,通过老鼠博任务 (rGT) 测量.
- 多巴胺基操纵往往不一致地影响选择或冲动性,特别是在学习的不同阶段.
- 状胆固醇内部神经元 (CINs) 调节DA释放和神经可塑性,这表明它在强化学习和行为控制中发挥作用.
研究的目的:
- 为了研究腹状条状CINs (vsCINs) 在调节奖励学习和冲动控制在RGT的不同阶段的作用.
- 为了确定vsCINs是否会影响任务获取过程中的行为与稳定的性能.
- 在vsCIN操纵的影响中探索潜在的性别差异.
主要方法:
- 在Sprague Dawley大鼠中使用化学遗传学来选择性地激活或抑制vsCINs.
- 在获得阶段或表现稳定时,对老鼠进行了老鼠博任务 (rGT) 的测试.
- 运动冲动性和风险选择模式被量化为行为指数.
主要成果:
- 在稳定的表现期间,vsCIN激活/抑制调节了两性运动冲动性,而不影响选择模式.
- 在任务获取过程中,vsCIN操纵改变了风险选择 (随着激活减少,随着抑制增加),但不是运动冲动性.
- 观察到性别特异性影响:vsCIN激活减少了男性的风险选择,而抑制增加了女性的风险选择.
结论:
- 腹腔条状CINs根据行为状态 (获取与稳定的表现) 影响冲动控制和奖励学习.
- 这些发现凸显了胆固醇信号在塑造决策策略中的动态作用.
- 关于乙胆-多巴胺相互作用的可测试预测建议,以解释观察到的行为性别差异.
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