FIG. 1.

Spectrographic representation of the stimuli used in the experiment. The signal (in red) was a 1.5-kHz tone. The masker consisted of 17 tones, and its central component was at the signal frequency. A In the Sil condition, the precursor corresponded with a 437.5-ms silent interval. B In the Prec condition, the precursor was an exact copy of the masker, except for the omission of the central component. C In the Sil + 10 condition, the precursor corresponded with a 437.5-ms silent interval, and the central masker component (thick line) was 10 dB higher than in the other two conditions.