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

它们通过电子脉冲或作电位把信号递给神经轴突。

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，都是关于作电位是如何被触发的。

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

我们现在暂停在此时此刻正在你脑内的一个运电势。

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

这些复合因可以将作电位提速至每小时 432 公里。

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，因为它可以极大地加速作电位的播。

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

这是植物内部发生的作电位。

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

好的。 所以在这里我们看作电位编码信息的移。 好吧？

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

当您正在聆听作电位的合唱时。

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，来抑制作电位。

Stimulus is required to generate an action potential.

需要刺激来产生作电位。

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

S-T段反映心肌作电位的平台期。

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

我们得什么？ 我们获得漂亮的作电位。

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，来触发作电位。

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

我们甚至已经在人类身上看作电位。

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作电位。

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

作电位可以以每秒 100 米的速度播，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，和别的神经元发送作电位信号的轴突。

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

但是为让它在接收神经元中再次成为作电位，它必须被转换回电位。

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

它有触觉感受器，以作电位的形式将信息回。

A decrease in blood pressure causes a decrease in action potentials sent to the cardio regulatory center of the medulla.

血压降低导致发送延髓心脏调节中心的作电位降低。