Ancient human ear-orienting system could yield clues to hearing deficits in infants

13 octubre 2015

Vestigial organs, such as the wisdom teeth in humans, are those that have become functionless through the course of evolution. Now, a psychologist studying vestigial muscles behind the ears in humans has determined that ancient neural circuits responsible for moving the ears, still may be responsive to sounds that attract our attention. Neuroscientists studying auditory function could use these ancient muscles to study positive emotions and infant hearing deficits.