Table 6. Correlation between McGurk perception and BOLD signal change in ROIs from the second fMRI experiment.

For each participant, four ROIs were generated using data from the second fMRI experiment (one table column per ROI). AV ROIs were created from pSTS regions that showed a significant positive response to blocks of AV speech (q < 0.01). A∩V ROIs were created from pSTS regions that showed a significant positive response to both unisensory A and unisensory V stimulation (both q < 0.05). The percent BOLD signal change in each ROI was calculated for all trials, mouth-viewing trials, and eye-viewing trials in the first fMRI experiment (one table row per trial type). For each participant, the fraction of trials on which a McGurk fusion percept was reported in response to a McGurk stimulus was calculated. Across 34 participants, we correlated each ROI fMRI value with each participant’s McGurk fraction to obtain r and p values. No correction for multiple comparisons was performed.

	AV ROI L	A∩V ROI L	AV ROI R	A∩V ROI R
All trials	r = 0.08 p = 0.67	r = 0.05 p = 0.76	r = 0.11 p = 0.52	r = 0.12 p = 0.51
Mouth trials	r = 0.03 p = 0.86	r = 0.02 p = 0.91	r = 0.07 p = 0.69	r = 0.07 p = 0.70
Eye trials	r = 0.12 p = 0.50	r = 0.09 p = 0.60	r = 0.16 p = 0.37	r = 0.17 p = 0.33