title: Pushing the envelope of sound.
abstract: Normal hearing depends on the amplification of sound in the cochlea. In this issue of Neuron, Fettiplace and colleagues show that prestin-based amplification is a viable mechanism as it is not limited by the outer hair cell's membrane time constant as previously surmised.
authors.affiliation: UCL Ear Institute, London WC1X8EE, UK. j.ashmore@ucl.ac.uk
authors.forename: Jonathan
authors.initials: J
authors.lastname: Ashmore