The AFNI_data6 data came courtesy of Mike Beauchamp. I believe the citable paper is
Nath, A.R., Beauchamp, M.S., 2011. Dynamic changes in superior temporal sulcus connectivity
during perception of noisy audiovisual speech. J. Neurosci. 31 (5), 1704–1714
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www.ncbi.nlm.nih.gov]