The McGurk effect

This isn't so much about information management but really processing audible information. There is a compelling video on a web site that demonstrates the "McGurk Effect". Harry McGurk and John MacDonald first described this phenomenon in 1976 in which our visial response to a person's mouth movement has an impact on what we hear.

Play the clip several times, alternating between looking at the talking head while listening, and listening with your eyes shut. Very weird.