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What we're going to show you is the next animation, which illustrates how these different components are able to paralyze a fish. So here is the electrical signal coming down the nerve. ...

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So we're looking at an Aplysia stretched out. We're going to focus in on the gill and the siphon. We're going to apply an extremely weak stimulus so you can see the amplification with s...

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And so what I would like to do now is continue this developmental story. And don't be worried here. So what I'm going to try and do is really focus on this question of neuronal identit...

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So we're introducing ourselves into this process about one month after fertilization, when the entire embryo is smaller than the size of a dime. And we're going to look into the nervou...

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The huge green warrior Tars Tarkas came slowly toward me with his thin sword.I backed away.I did not want to fight him.I did not wish his death.He had been as kind to me as a green Martian can be.As I...

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So let's look, for example, just at three cells here. They are equivalent in potential, they could give rise to any region of the nervous system, but by chance they occupy different posit...

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Steve: In the last chapter of the your book, you tell us the story at the beginning where you've just spoken to a group of businessmen and one of them comes up to you afterwards and says, "I thought y...

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We're going to be looking at these electrical impulses, these flashes, which are called action potentials, are crossing three neurons in the circuit here. And as we look in higher po...