在受到惩罚的风险下,决策的胆固醇调节
Megan Kelly1, Merrick Garner1, Emily M Cooper1
1Department of Psychology, The University of Texas at Austin, Austin TX 78712, United States.
Neurobiology of learning and memory
|December 22, 2024
概括
胆固醇信号传递,特别是通过肌类受体,会影响涉及潜在惩罚的决策任务中的风险承担. 这表明,对于有改变风险行为的疾病来说,这可能是潜在的治疗目标.
科学领域:
- 神经科学是一个神经科学.
- 行为神经科学 行为神经科学
- 药理学 药理学是指药理学的学科.
背景情况:
- 决策涉及到平衡风险和回报,由中皮皮质和神经递质电路和神经递质调节.
- 多巴胺在承担风险中的作用已经确立,但乙胆的贡献,特别是惩罚,理解程度较低.
研究的目的:
- 研究胆固醇信号如何影响决策,当选择涉及明确惩罚的风险时.
- 确定尼古丁和肌酸乙胆受体在这个过程中的特定作用.
主要方法:
- 鼠被训练在一项任务中,他们可以在安全的奖励和更大的奖励之间选择,并有足震的风险.
- 评估了尼古丁 (尼古丁,美卡胺氨酸) 和肌糖氨酸 (氧得雷莫林,斯科波胺氨酸) 受体激素和对抗剂的作用.
- 对照实验使用奖励歧视任务来区分动机效应和风险敏感性.
主要成果:
- 尼古丁受体操纵并没有改变对风险选择的偏好,但影响了反应延迟和遗漏.
- 肌肉蛋白受体激活 (oxotremorine) 和阻断 (scopolamine) 降低了对更大,更有风险的奖励的偏好.
- 对照实验表明,这些肌肉效应可能是由于动机变化,而不是风险敏感性.
- 在胆固醇操纵的效果中没有观察到性别差异.
结论:
- 通过肌肉蛋白受体进行胆固醇信号传递,在两性之间处罚的风险下,在决策中发挥作用.
- 肌肉蛋白受体似乎调节灵敏度以奖励风险选择中的大小.
- 研究结果表明,针对异常冒险行为障碍的胆固醇受体有潜在的治疗途径.
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