Ranging from a threatening hiss to a blood-curdling scream, the sound of the Aztec death whistle is as creepy as the skull-like appearance of the instrument that produces it. Brain scans suggest the ...

The skull-shaped body of the Aztec death whistle may represent Mictlantecuhtli, the Aztec Lord of the Underworld. Credit: Sascha Frühholz / UZH The so-called Aztec “death whistle” is an instrument ...

ANCIENT Aztec 'death whistles' have a strange 'uncanny valley'-style effect on the human brain, new research has found. These clay instruments were often shaped like human skulls, and are known for ...