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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 ...

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During ritual ceremonies, the ancient Aztec civilization used a “death whistle” — a haunting instrument shaped like a human ...

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The Aztec death whistle's scream-like sound evokes fear and symbolizes mythological deities, linking modern and ancient ...

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