Why you hear what isn't thereYour brain decides on a sound's location instantly.

Discover the auditory illusion that explains why you can be so certain about a sound's location, even when you're wrong. The Franssen effect reveals how your brain locks onto the first few milliseconds of a sound to pinpoint its source, a mental shortcut for navigating complex, echo-filled environments. This process makes your perception of sound surprisingly stubborn, ignoring later cues that contradict its initial conclusion.

0:00
3:06