We open our eyes and we think we're seeing the whole world out there. But what has become clear—and really just in the last few centuries—is that when you look at the electro-magnetic spectrum we are seeing less than 1/10 Billionth of the information that's riding on there. So we call that visible light. But everything else passing through our bodies is completely invisible to us. Even though we accept the reality that's presented to us, we're really only seeing a little window of what's happening.

You´re not perceiving what's out there. You're perceiving whatever your brain tells you.

One of the most pervasive mistakes is to believe that our visual system gives a faithful representation of what is "out there" in the same way that a movie camera would.

All activity in the brain is driven by other activity in the brain, in a vastly complex, interconnected network.

The brain runs its show incognito.

Visual cortex is fundamentally a machine whose job is to generate a model of the world.

As we develop better technologies for probing the brain, we detect more problems.