Researchers reveal ancient Aztec whistle still evokes fear with chilling sound

Researchers from the University of Zurich have studied the Aztec Death Whistle, an ancient instrument known for its terrifying sound. New tests show that the whistle still evokes fear, similar to its impact in the 14th century. Participants in the study reported feeling frightened when they heard the whistle's eerie sound. Brain scans indicated heightened emotional responses, activating areas linked to fear and distress. The study suggests the whistles were likely used in sacrificial rituals to intimidate victims and spectators. Archaeological findings support their use in ceremonies related to death, with some whistles found at ritual sites in Mexico City.