Archaeologists unearthed the first Aztec death whistles, also known as ehecachichtlis, in 1999 while excavating the ...

Brain scans of modern listeners suggest that Aztec whistles sound like human screams, which may have prepared sacrifice ...

The Aztec skull whistle produces a shrill, screaming sound. A study shows that these whistles have a disturbing effect on the human brain. The Aztecs may have deliberately used this effect in ...

It sounds like a scream from the depths of the underworld. It’s a haunting, ear-piercing shriek that stirs something primal ...

But in the forests of central Mexico, a single note from an Aztec whistle didn’t always indicate celebration — it meant death. “Death whistles,” or Aztec skull whistles, were short ...

Ranging from a threatening hiss to a blood-curdling scream, the sound of the Aztec death whistle is as creepy as the ...

The Aztec death whistle is a mesoamerican instrument designed to imitate a human scream, and was often used during battle or at sacrificial ceremonies. Researchers from the University of Zurich ...