Figure 1.

A schematic diagram showing the setup for the experiment. Following the presentation of an orthographic stimulus sentence and a condition cue (“Normal” or “Rhythm”), participants read the sentence according to the cue. Participants’ speech signal was recorded and fed to an experimental computer running Audapter. On perturbed trials, detection of the onset of /s/ in “steady” was used to initiate the pre-programmed auditory perturbation which was fed back to the participant via insert earphones. Both the perturbed and unperturbed signals were recorded for further analysis.