But take another look at the device in his brain stem.

These, too, are under the control of cells in the brain stem.

Then, too, a region in the brain stem controls the respiratory rate.

If she could just get down to using only her brain stem, she'd be cured.

So this irrigation system to the brain stem is vital.

It means they can see the part of the brain stem they're after.

In the first test series the back of the head and the brain stem were above water.

It exited through his brain stem, by which time the man was dead.

But we can't reach the brain stem from outside; it's not under conscious control.

Current tests are devised to only find them in the brain stem.