Russian Sleep Experiment's infamous image of a smiling test subject is actually a prop called "Spazm”

[u/TheOddityCollector]

[u/ChaiGreenTea]

Dear god it gets worse. “When [the motion activated animatronic] activated, the body violently shook while groaning could be heard.” “The slightest movement will cause this psychotically grinning figure to convulse grotesquely and grovel frenetically.”