Figure 3.

Dependence of pitch and loudness bias interactions on stimulus timing. (A,B) Experimental design. The onset of distractors was 250 ms before and their offset 250 ms after the onset and offset of the auditory stimuli, respectively. (C) Mean bias estimates (PSE) on the frequency discrimination task (200-Hz standard) as a function of stimulus timing. The strength of the bias effect depended on distractor frequency (the green, red, and blue bars indicate the 100-, 200-, and 600-Hz distractors, respectively). The black bar shows the PSE in the baseline condition. Error bars indicate SEM. The frequency bias effects were comparable across the synchronous and asynchronous timing conditions. (D) Mean bias estimates on the intensity discrimination task as a function of stimulus timing. Conventions as in (C). Intensity bias effects depended on synchronous presentation of auditory stimuli and tactile distractors.