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Updated: Feb 12, 2026

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning

Published on: June 2, 2014

通过多光子激发来触发单个神经元的动作潜力,从而产生视觉引导的行为

Haipeng Wang¹, Yujie Xiao², Wanyi Tang¹

¹The Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, P.R. China.

Nature communications

|February 10, 2026

概括

科学家们开发了一种新的激光方法,可以在没有遗传修饰的情况下激活大脑中的单个神经元. 这种技术精确地控制神经活动,使得小鼠能够有针对性地控制特定的行为.

科学领域:

神经科学是一个神经科学.
视觉遗传学视觉遗传学
生物物理学的生物物理.

背景情况:

精确控制单个神经元的发射对于理解神经回路至关重要.
目前的方法通常需要基因修饰 (opsins),并且可以激活多个神经元.

研究的目的:

提出一种非侵入性,无素的方法来激活单个神经元 in vivo.
通过激活单个神经元来证明触发特定行为的能力.

主要方法:

利用聚焦的女性秒激光来准主要视觉皮层 (V1) 中单个神经元的 soma.
采用多光子激发来打开储存运行的通道,诱导流入和神经元去极化.
在清醒的小鼠中记录了动作潜能 (AP) 发射和观察到的行为反应.

主要成果:

成功激活了V1的2/3层中的单个神经元,而没有同时激活周围的神经元.
证明激活单个神经元可以引起特定的,视觉引导的行为.
表明破坏单个神经元暂时停止了整体功能和行为,并迅速恢复.

结论:

开发的无素光刺激方法允许精确,非侵入性激活视觉皮层中的单个神经元.
这种技术可以研究复杂的神经元组合中的单个神经元功能及其在行为中的作用.
为神经科学研究提供了一个新的工具,不需要基因操纵.

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Inducing Long-Term Plasticity of Intrinsic Neuronal Excitability in Neurons of the Dorsal Lateral Geniculate Nucleus

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Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
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Propagation of Action Potentials

Propagation of Action Potentials

The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
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Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
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