Pseudobulbar affect

But listen, Nancy, the medication that she's missing, and I don't know how to pronounce this, but it's Nuedexta.

Um, this is a, a, a medication that is used to treat PBA, uh, pseudobulbar affect, okay? It's a neurological condition involving the involuntary episodes of laughing or crying.

Now, we're hearing the, the screaming going on.

She sounds to me as if she's in fear.

What is biologically happening there? Why does our face betray the room?

Well, to understand inappropriate affect, and there's a more severe neurological version called pseudobulbar affect or PBA, we have to look at the anatomy of emotional expression.

Our brains have two very different systems working simultaneously.

Okay, what are they?