Figure 3.

Top two panels show the time course of mean pupil dilations, adjusted to baseline and to each individual's dynamic range while normal-hearing young adults listened to narrative passages. Data are shown for narratives that were time-compressed, presented at a normal speech rate, and in the time-restoration condition. Data are collapsed across vocoder conditions. (A) shows pupillary responses aligned to the end of the narrative passage, with time 0 indicating the end of the passage. (B) shows these data as a percentage of the duration of each passage. The three bottom panels show the mean adjusted pupil dilations separately for clear speech (C), 10-channel vocoding (D), and 6-channel vocoding (E) as a percentage of the passage duration. Error ribbons are one standard error.