They transmit signals down their axons by way of electrical impulses, or action potentials.

它们通过电子脉冲或动作电位把信传递给神经轴突。

So once again, it all boils down to action potentials.

所再一次，一切都归结为动作电位。

So now we've paused on one motor action potential that's happening right now inside of your brain.

我们现暂停此时此刻正你脑内的一个运动电势。

Myelin is extremely important to neurons, because it helps to allow an action potential to propagate much faster.

髓鞘对于神经元十分重要，因为它可极大地加速动作电位的传。

Your brain sends action potentials down your spinal cord and preganglionic neuronal axons.

你的大脑发送动作电位到你的脊髓和节前神经轴突。

These compounded factors can raise the speed of an action potential as high as 432 kilometers per hour.

些复合因素可将动作电位提速至每小时 432 公里。

That is an action potential that is happening inside the plant.

是植物内部发生的动作电位。

OK. So here we see an action potential encoding information to move. Alright?

好的。 所里我们看到了动作电位编码信息的移动。 好吧？

Action potentials are the zaps in our nerve cells, our living electricity.

动作电位是神经细胞中的电击，即我们体内的生命电流。

And so once the action potential gets to the end.

动作电位一旦到达末端。

There's far more dendritic spikes than there are action potentials, far more.

树突尖峰的数量远多于动作电位，多得多。

The S-T segment reflects the plateau in the myocardial action potential.

S-T段反映了心肌动作电位的平台期。

What do we get? We get a beautiful action potential.

我们得到什么？ 我们获得了漂亮的动作电位。

Timescale of many action potentials, but even on the shorter timescale.

许多动作电位的时间尺度，甚至较短的时间尺度上。

Since calcium has a positive charge, it makes the inside of the cell more positive, and that helps trigger an action potential.

由于钙离子带正电，可导致细胞内正电荷积聚，来触发动作电位。

Your nervous system uses lightning-fast electrochemical action potentials, delivered by an expressway made of neurons to specific cells and organs.

你的神经系统使用闪电般的电化学动作电位，通过由神经元组成的高速公路传送到特定的细胞和器官。

Today your ears heard me tell you how your cochlea, basilar membrane, and hair cells register and transduct sound into action potentials.

今天你的耳朵听到我告诉你你的耳蜗、基底膜和毛细胞是如何记录声音并将声音转化为动作电位的。

Because it let us figure out this: [Action potential blip] It's called the action potential.

因为它让我们明白了一点：[动作电位闪现] 被称为动作电位。

The result is a slowed repolarization hence a prolonged duration of action potentials and refractory period.

导致复极化速度减慢，因此延长动作电位和不应期。

We've even seen an action potential in a human.

我们甚至已经人类身上看到了动作电位。