在饮酒开始和时,前面岛屿的神经活动与强迫性酒精消费有关,类似于强迫性饮酒
Phillip Starski1, Mitch D Morningstar2, Simon N Katner1
1Department of Psychiatry, Indiana University School of Medicine, Indianapolis 46202, Indiana.
概括
前半岛 (AIC) 在强迫性饮酒中发挥着关键作用. 特定的AIC神经活动模式,特别是与相关的模式,预测和维持寻找酒精的行为,即使面临负面后果.
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
- 成研究 研究成研究
背景情况:
- 强迫性饮酒的病因,尽管有不良结果,但仍以持续饮酒为特征,仍然不完全理解.
- 前半岛 (AIC) 参与情绪,动机和整体感受,是潜在的关键大脑区域,驱动这种抗挑战行为.
- 以前的研究表明,AIC皮下投射会影响强迫性摄入,并且在重饮者中被激活,这强调了研究AIC活动模式的必要性.
研究的目的:
- 在动物模型中调查与强迫性饮酒相关的AIC内的特定神经活动模式.
- 为了确定AIC神经元发射与酒精消费,行为以及在摄入中断期间保持有动机的反应有关.
- 为了区分酒精消费期间的AIC活动与摄入口味,不厌恶性物质如糖时的AIC活动.
主要方法:
- 在15只雄性大鼠的AIC中记录了单单元活动,这些活动是在仅饮酒和强迫性饮酒模式下进行的.
- 分析了神经元发射表型,包括持续的变化和同步模式.
- 将饮酒期间的AIC活动与饮用糖期间的AIC活动进行比较,并在休息期间检查活动.
主要成果:
- 在AIC中确定了三种持续发射的表型 (增加,减少,饮酒开始) 和同步的发射模式.
- 在饮酒开始时发射增加的AIC神经元在类似强迫的条件下表现出更高的活动.
- 持续增加AIC神经元的发射与在休息期间保持寻找酒精的驱动力有关.
- 特定的同步的AIC发射模式预测了强迫性饮酒,与整体消费相关.
- 在饮用糖时,AIC发射量没有增加,这与AIC抑制效应的研究结果一致.
结论:
- AIC神经元活动模式与维持和预测强迫性饮酒密切相关.
- 在AIC中,持续的燃烧增加和同步活动似乎对于维持动机和对酒精的冲动至关重要,特别是在饮酒暂停期间.
- 这些发现有助于在强迫性酒精使用和持续的积极行为中更全面的AIC功能模型.
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