McGurk effect: Auditory "ba" + Visual "ga"

2Likes

4,117Views

2010Feb 18

In order to experience the McGurk effect, watch the movie with eyes open and eyes closed. The movie consists of an incongruent auditory-visual pair of syllables. The auditory track contains the syllable "ba" (verify this by listening to the movie with eyes closed). The video track contains the syllable "ga" (verify by watching the movie with the sound muted). When the auditory and video tracks are seen and heard together, most subjects report hearing "da" or something similar (as opposed to either of the component syllables, "ba" or "ga"). The following file is a .MOV file that can be played with the Apple QuickTime viewer. This viewer is pre-installed on all Apple computers and is available for many other computers as a free download from http://www.apple.com/quicktime/download/ Another alternative for viewing this file is the VLC media player, a free download from http://www.videolan.org/ This movie was created in FinalCut Express under Mac OSX using MPEG-4 video compression at medium quality (bitrate 6400 kB/sec). Stimuli used in: Beauchamp MS, Nath AR, Pasalar S (2010) fMRI-Guided Transcranial Magnetic Stimulation Reveals That the Superior Temporal Sulcus Is a Cortical Locus of the McGurk Effect. J. Neurosci. 30:2414-2417.