Dr. Michael Kilgard

So the answer is not known.

If we did, we'd get a responder rate.

In both groups, we'd say, let's say it's 60% or 50% response rate where they're better, and we get a sham response rate.

Let's say it's 25% and get better even when we don't do it.

You'd subtract those two, which is 25%, take the inverse of that, and you'd get a number needed to treat a four.

That's how we now work on these medications.

We think about what's the difference in the percent that you're going to get better with a double-blinded placebo control.

That data is not available.

But the general idea is the symptoms are clear.

The day before that happens, all those memories are gone.

You'll have no memories whatsoever.

So if people do this 20 times as they typically do, they'll lose 20 days of their life, which they never get back.

Many people will do it on a regular basis.

Oh, I thought they'd just go in once.

Typically sessions of three is my understanding.

Again, I'm not a practicing psychiatrist, so take this, talk with your own physician.

Typically you do a sequence of them.

People, as you know, major depression have sort of a cycling pattern as most neurological disorders and psychiatric disorders do.

So they'll go in during a time when they're bad.

Now, if you do nothing, they'll tend to be better later because you went in when they were worse.