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. Author manuscript; available in PMC: 2009 Apr 1.
Published in final edited form as: Cortex. 2008 Feb 7;45(4):517–526. doi: 10.1016/j.cortex.2007.10.008

Fig. 1.

Fig. 1

(a) The 29 stimuli plotted against their ERB distance (deviance) from the standard (St) for vowel (top) and against their semitone deviance from the standard for tone stimuli (bottom). The formant stimuli were similar to that for vowels, although only F2 was varied rather than F1 and F2. The four deviant stimuli (D1-D4) for each class that were used in the fMRI experiment are shown in filled circles. Arrows mark the mean perceptual thresholds for each stimulus class and (b) Example of one session (above) of continuous stimulus presentation comprising of 12 blocks of alternating stimulus class. F = formant; T = tone and V = vowel blocks. Each block (below) was composed of 35 stimuli (circles). Fifteen standards (open circles) were presented before five deviants, all of the same level of deviancy from the standard (D4 in the exploded block, filled circles).