The human voice is as characteristic as a face – a friend can often be identified by a message on an answering machine, even if he or she forgot to mention their name. The main region for face recognition lies within the inferior temporal lobe in primates. There, groups of clustered nerve cells can be found that respond significantly stronger to faces than to other images. Researchers at the Max Planck Institute for Biological Cybernetics in Tübingen, Germany, have begun to search for similar structures that process voice information in the brain. In the temporal lobe of rhesus monkeys they discovered “voice cells” that respond selectively to calls and sounds from conspecifics.