And its job is to spit out this neurotransmitter at all those locations.

The idea is that they are broadcast systems, that at the cell body, they're given information.

They amalgamate this information.

They then decide when to make electrical impulses.

Those impulses run out to, let's say, a million connections, and those connections decide whether or not to cause a little bit of neurotransmitter release, dopamine release, norepinephrine release, serotonin release.

Um, these are really important systems.

They're exactly the systems that we've all sort of heard of, and we've heard of dopamine.

Okay.

Canva, the thing that makes anything a thing.

Other people.

Everyone is interested in other people.

Everyone has relationships with other people, and they're interested in these relationships for a variety of reasons.

Good relationships, bad relationships, annoying relationships, agnostic relationships.

And what I'm going to do is focus on the central piece of an interaction that goes on in a relationship.

So I'm going to take as inspiration the fact that we're all interested in interacting with other people.

[laughs]

... uh, dopamine signals in their noses, because, um, these are wild and cool experiments.

They are, and they're not wild and cool because of me.

They're wild and cool because of Cristina Zelano at Northwestern.

But let me say, one thing about how we do measure dopamine in human brains, we do it in very specialized circumstances, where you are having a deep brain-stimulating electrode put into your brain to treat a movement disorder, like Parkinson's disease or essential tremors.

So when you have that, and a minority of patients choose to have a small burr hole put in their head, and under careful, uh, operating room procedures, it's put down into different structures in your brain, we won't name them, and then turned on.

Okay? And it's symptom relieving.

Essential tremors is like Parkinson's disease.

What time do you go to sleep?