What is it called: The mat with metal spikes where a gifted dude lies on?

Question

Like a psychic man. I know it's not some sort of special ability, but a mental/ physical one...

Answer 1

A  Bed of Nails ;)))

Answer 2

A bed of nails.  

Answer 3

There's not a specific name for it, but it's often colloquially called a "bed of nails."

Answer 4

It's usually called "a bed of nails."