The concurrent presentation of different auditory and visual syllables may result in the perception of a third syllable, reflecting an illusory fusion of visual and auditory information. This well-known McGurk effect is frequently used for the study of audio-visual integration. Recently, it was shown that the McGurk effect is strongly stimulus-dependent, which complicates comparisons across perceivers and inferences across studies. To overcome this limitation, we developed the freely available Oldenburg audio-visual speech stimuli (OLAVS), consisting of 8 different talkers and 12 different syllable combinations. The quality of the OLAVS set was evaluated with 24 normal-hearing subjects. All 96 stimuli were characterized based on their stimulus disparity, which was obtained from a probabilistic model (cf. Magnotti & Beauchamp, 2015). Moreover, the McGurk effect was studied in eight adult cochlear implant (CI) users. By applying the individual, stimulus-independent parameters of the probabilistic model, the predicted effect of stronger audio-visual integration in CI users could be confirmed, demonstrating the validity of the new stimulus material.
Enthalten in Psychonomic bulletin & review New York, NY : Springer, 1994 24(2017), 3, Seite 863-872 Online-Ressource ; volume:24 year:2017 number:3 pages:863-872
Proceedings of the 5th International Conference on Auditory Cortex - towards a synthesis of human and animal research ; September 13-17, 2014, Magdeburg, Germany Magdeburg : Docupoint-Verl., 2014 (2014), Seite 111 III, 158 S.
