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大脑电路的前前调节有助于灵活的决策
Ying Duan1, Zilu Ma1, Pei-Jung Tsai1
1Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, MD, 21224, USA.
概括
在老鼠中激活中间前额叶皮层-核 accumbens 途径通过减少错误来增强行为灵活性. 这种途径调制影响大脑活动和功能连接,为决策灵活性提供了洞察力.
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
- 认知神经科学 认知神经科学
背景情况:
- 在神经精神疾病中,行为和认知灵活性缺陷是常见的.
- 中间前额叶皮层 (mPFC) - 核 (NAc) 途径对于老鼠的灵活行为控制至关重要.
- 这种途径对大脑活动和连接的精确调节尚未完全理解.
研究的目的:
- 通过设置转移任务确认mPFC-NAc途径在行为灵活性中的作用.
- 研究mPFC-NAc通路激活对全脑活动和功能连接的因果关系.
- 探索路径激活,大脑网络变化和任务执行之间的关系.
主要方法:
- 在老鼠中使用设置转移任务来评估行为灵活性.
- 使用化学遗传学 (DREADD) 来选择性地激活NAc的终端轴突.
- 使用功能性MRI (fMRI) 测量全脑活动和功能连接.
主要成果:
- 通过减少持久性错误,mPFC-NAc路径激活显著改善了设置转移任务的性能.
- 途径刺激增加了基底 - - thalamus - - 皮质环区域 (NAc,thalamus,下丘脑,皮质) 的活性.
- 在NAc和mPFC,NAc和M2之间以及在皮质电路内,功能连接性下降;性能与连接强度相关.
结论:
- 该mPFC-NAc途径在增强行为灵活性方面起着因果作用.
- 这种前前回路的调节会影响大脑全域活动和前前/皮层网络连接.
- 研究结果提供了关于决策灵活性和相关赤字的潜在治疗目标的见解.
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