Dr. Christof (Christoph) Koch

Zero means there's no complexity.

It's flat, like in a dead brain, flat line.

One, it means every EG is totally, electrode is totally independent from anyone else, never happens in a real brain.

In a real brain, typically, wake brain, you get things between 0.65 and 0.3.

Let's see.

There's a sharp threshold at 0.31.

Anyone that we've had now, there are 300 people that are both patient and normal, people that have been measured.

If you're above the threshold of 0.31, you're conscious.

If you're below the threshold, you're unconscious.

That probably means, as it's nonlinear, just like Hodgkin-Huxley, there's probably a nonlinear circuit mechanism that once the circuit is intact—

It's sufficient to support consciousness.

Now, you can ask, well, this is all very nice.

Why is this relevant?

Well, it is relevant in the following case, something that could happen to any of us.

I step out here onto the Pacific Coastal Highway.

I get hit by a car, okay?

I'm now unconscious.

I get to the ICU, whether that's a traumatic brain injury or cardiac arrest or hemorrhage.

I'm unconscious.

I'm like this.