In the video the man sounds creeped out. He's a patient with brain damage and you can't see his face in the video, just his hands.

They're thick hands with a chain around one wrist and a wedding band on one finger.

But in his hands he's holding a number, a green foam 8.

It's about 8 inches tall, like something you might see a preschool or playing

with. In the video the man is holding the green foam 8 upright at first, but

there's something wrong. He can feel the curves of the

eight with his fingers, but when he looks at it it looks like an incoherent

jumble of lines to him. The audio quality is poor but you can hear his reaction here.

I don't see the shape. I don't see the shape that I'm feeling. But when the man rotates the number by 90 degrees, something happens.

The shape suddenly snaps into focus for him. The eight now looks like a green mask with two eye holes. Here's his reaction.

I know folks this is too strange for words. I know folks this is too strange for words.

Now the man begins rotating the number back and forth, back and forth.

And each time it changes orientation,

he watches it melt and cohere, melt and cohere,

over and over.

It's so creepy to him that he finally hands the eight

to a nearby scientist.

You gotta take that away.

You gotta take that away.

He doesn't even want it in his sight anymore.

For privacy sake, this man is known only by his initials as RFS.

And RFS is the subject of a fascinating new case study that would have done Oliver

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