Archaeologists have discovered numerous ceramic or clay whistles at Aztec sites, dubbed “death whistles” because of their distinctive skull shapes. A new paper published in the journal Communications ...

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 ...

The findings support the hypothesis that such whistles may have been used in Aztec religious rituals or perhaps as mythological symbols. Click to expand... Or, given the fear it inflicts on those who ...