Is it live? Or is it Memorex?

Place a rubber hand on a table. Hide your right hand under the table. Have someone stroke both hands, yours and the fake one, with a paintbrush.

In a study that sheds light on phantom limb syndrome (the eery sense of still having all one's limbs that's sometimes felt by amputees), a London research team did just that. They found that within 11 seconds, volunteers in the study started to feel that the rubber hand was theirs. Read more.