在新皮层的正规尖端神经元中,活动依赖的异位子动作潜力
Yizhen Z Zhang1,2, Stella Sapantzi1, Alice Lin1
1Department of Neuroscience, Brown University, Providence, RI, United States.
Frontiers in cellular neuroscience
|November 30, 2023
概括
宫外动作潜能 (EAP) 在实验室中被诱导到小鼠金字塔神经元中. 这表明了信息处理的新机制以及大脑振荡和发作中的潜在作用.
科学领域:
- 神经科学是一个神经科学.
- 细胞神经科学 细胞神经科学
- 计算神经科学是一种神经科学.
背景情况:
- 动作潜能通常沿着神经元轴突沿着正极形传播.
- 宫外动作潜能 (EAP) 是一种动作潜能,可以在异常部位启动,以抗体运动的方式传播.
- 虽然在病理条件和某些内神经元中观察到EAP,但在非病理条件下的金字塔神经元中没有报告EAP.
研究的目的:
- 研究非病理性金字塔神经元中异胎动力潜在生成的潜力.
- 描述金字塔神经元表现出宫外激发的条件.
主要方法:
- 在实验室中,对老鼠新皮质金字塔神经元进行了全细胞补丁记录.
- 通过使用各种当前步骤协议和脉冲列车 (30-100 Hz) 触发正方形动作潜能来触发子宫外动作潜能.
主要成果:
- 很大一部分 (72.7%) 常规尖 (RS) 的金字塔神经元可以在特定刺激后发射EAP.
- 大多数RS神经元 (56.1%) 在一系列刺激条件下表现出EAP发射.
- 宫外发射启动需要大量的先前正规动作潜力 (平均为~864在~81秒).
- 一些神经元显示频率调节的反应,表明选择性刺激处理.
结论:
- 金字塔神经元可以在长时间内整合信息,从而导致源自远端轴突的自发发射.
- 在RS细胞中产生EAP的广泛能力表明在神经信息处理,皮质振荡和发作易感性方面可能发挥作用.
相关概念视频
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01:28Action Potential: Phases of Stimulation
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The action potential is a complex electrical event that occurs in excitable cells, such as neurons and muscle cells. It consists of several distinct phases, each with specific characteristics.
Resting Phase:
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01:32Postsynaptic Potential (PSP)
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