Related Experiment Video
Updated: May 31, 2026

A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
The phantom head
Vilayanur S Ramachandran1, Beatrix Krause, Laura K Case
1Center for Brain and Cognition, University of California at San Diego, McGill Hall, 9500 Gilman Drive, La Jolla, CA 92093-0109, USA. vramacha@ucsd.edu
Abstract:
A student volunteer was asked to stand just behind a mannequin so that the student was looking at the back of the mannequin's plastic head. The experimenter stood off to one side and used her two hands to stroke and tap the back of the student's head in perfect synchrony with the back of the mannequin's head. After 1-2 min the majority of naive subjects tested began experiencing the sensations as emerging from the mannequin's head rather than from their own, demonstrating a novel 'phantom-head' illusion. The fact that sensory referral here occurs to a part of the body that is not normally visually accessible challenges the leading Hebbian explanation of the well-studied rubber-hand illusion.
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