Researchers have shown that, like humans, mustached bats use the left and right sides of their brains to process different aspects of sounds.
No other animal, not even monkeys or apes, has proved to use such hemispheric specialization for sound processing - meaning that the left brain is better at processing fast sounds, and the right processing slow ones.
"These findings upset the notion that only humans use different sides of their brains to distinguish different aspects of sound," says the study's senior author, Stuart Washington, PhD, a neuroscientist at Georgetown.
Washington says the findings of asymmetrical sound processing in both human and bat brains make evolutionary sense.