Now, in the heart action potential is moving from one heart muscle cell to another over the surface of the heart.

心脏中的动作电位,沿相邻心肌细胞在心脏表面传递

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Sure. So the federal government has not taken a lot of action right now.

当然有。联邦政府现在采取的措施并不多。

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I want to come back to your own experiences in this, Rick but I want just go directly to Rick, now you are the director of Outdoor Action.

稍后我们再谈一谈你在这方面的经历，那么现在我想问一下，作为户外活动项目的主任。

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Now, what happens during an action potential is that that membrane potential changes very rapidly and it changes from being negative to being more positive.

在动作电位产生时,膜电位迅速改变,从较负的电位向更正的电位改变

耶鲁公开课 - 生物医学工程探索课程节选

Now what we do is to record the number of those action potentials in some period of time, and plot them on the graph below.

现在，我们要做的是记录,在一定时间内可能做出的动作，在图表中设计出来。

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