As a subject matter expert in neuroscience, I can explain that an Action potential is a crucial mechanism for the communication within and between neurons. It represents the rapid and temporary change in the electrical potential across the membrane of a neuron, which allows for the propagation of electrical signals along the neuron's length. Action potentials are initiated when a stimulus depolarizes a neuron's membrane to a certain threshold. Once this threshold is reached, voltage-gated ion channels open, leading to an influx of positively charged ions, which further depolarizes the membrane. This creates a wave of depolarization that travels down the axon towards the axon terminals, where it can stimulate the release of neurotransmitters to communicate with other neurons or target cells. Here's the translation in Chinese: 作为神经科学领域的专家，我可以解释动作电位是神经元内部和之间通信的关键机制。它代表了神经元膜电位的快速和暂时变化，这允许沿神经元长度传播电信号。当刺激使神经元膜去极化到一定阈值时，就会引发动作电位。一旦达到这个阈值，电压门控离子通道打开，导致带正电荷的离子流入，进一步去极化膜。这在轴突上形成了一个去极化的波，沿着轴突向下传播到轴突末端，在那里它可以刺激神经递质的释放，与其他神经元或目标细胞进行通信。 read more >>

An Action potential is the neurons way of transporting electrical signals from one cell to the next. This is a picture of a neuron, where you have dendrites in one end, and the axon terminal in the other end.read more >>