Burst timing determines perceived consonant order in the McGurk combination effect (Audiovisual stimuli)

The file “AV_stimuli.zip” contains the audiovisual speech stimuli generated by a native French talker for the study “Burst timing determines perceived consonant order in the McGurk combination effect.”

The stimuli were created by splitting the acoustic component of McGurk combination stimuli into two sequences. One sequence contained only the vowels /i_i/ (where the underscore represents a 300 ms intersyllabic pause). The other sequence contained the release burst and aspiration extracted from a natural articulation of /iki/. An auditory (A) continuum was then created by adding the burst and aspiration to the vowels at nine different temporal alignments (step size of 50 ms). At 0 ms, the midpoint of the burst coincided with the midpoint of the intersyllabic pause. At the extremes, -200 and 200 ms, the burst and aspiration almost completely overlapped with the initial or final vowel, respectively. Two audiovisual (AV) continua were then created by pairing the acoustic continuum with either visual (V) /ip_i/ or /i_pi/.

Filename list:

s5:congruentAV/i_i/

s6-s14: AV continuum, V/ip_i/ +A/i_i/ &burst paired at different asynchronies, -200, -150, -100, -50, 0, 50, 100, 150 and 200 ms, respectively.

s15-s23: AV continuum, V/i_pi/ +A/i_i/ &burst paired at different asynchronies, -200, -150, -100, -50, 0, 50, 100, 150 and 200 ms, respectively.

S27-s35: A continuum, A/i_i/ &burst paired at different asynchronies, -200, -150, -100, -50, 0, 50, 100, 150 and 200 ms, respectively.