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

们通过电子脉冲或动作电把信号向下传递给神经轴突。

So taste, like all our senses, is all about how action potentials get triggered.

所以味觉，就像我们所有的感官一样，都是关于动作电是如何被触发的。

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

这些复合因素可以将动作电提速至每小时 432 公里。

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

我们现在停在此时此刻正在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，因为可以极大地加速动作电的传播。

As you're listening to a chorus of action potentials.

当您正在聆听动作电的合唱时。

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

这是植物内部发生的动作电。

Stimulus is required to generate an action potential.

需要刺激来产生动作电。

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

好的。 所以在这里我们看到了动作电编码信息的移动。 好吧？

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。

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

S-T段反映了心肌动作电的平台期。

Since chloride has a negative charge, it makes the inside of a cell more negative, and that inhibits an action potential.

由于氯离子带负电，这可导致细胞内负电荷积聚，来抑制动作电。

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

我们甚至已经在人类身上看到了动作电。

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，这可导致细胞内正电荷积聚，来触发动作电。

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

所以再一次，这一切都归结为动作电。

So even if the brain sends a signal, the muscle cell can’t generate the action potential necessary to contract.

因此， 即使大脑发出信号，肌肉细胞也无法产生收缩所需的动作电。

Action potentials can travel as quickly as 100 meters per second, which is about 224 miles per hour for us non-metric system users.

动作电可以以每秒 100 米的速度传播，对于我们非公制用户来说大约是每小时 224 英里。

Nerve fibers are either dendrites that receive signals from other neurons, or axons that send signals called action potentials along to other neurons.

神经纤维，包括从别的神经元接收信号的树突，和向别的神经元发送动作电信号的轴突。

But in order for it to become an action potential again in the receiving neuron, it has to be converted back to electrical.

但是为了让在接收神经元中再次成为动作电，必须被转换回电。

It has touch receptors that are sending that information back down in the form of an action potential.

有触觉感受器，以动作电的形式将信息传回。