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Tactile Phantom Illusion


Follow the directions below to experience a striking "phantom limb" (or, perhaps we should say, phantom pencil) illusion.

Gently pull your upper lip in one direction, and your lower lip in the opposite direction.
Now insert a pencil centrally between your twisted lips...

You'll experience a "tactile illusion" in which it seems that two pencils are jutting out between your lips.

Could this phenomenon be related to the "ghost limb" sensation felt after surgical limb removal?


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