Audio-visual speech stimuli for the study of lip-reading and multi-sensory integration abilities in hearing-impaired individuals


  • Maren Stropahl Department of Psychology, Carl von Ossietzky University, Oldenburg, Germany
  • Stefan Debener Department of Psychology, Carl von Ossietzky University, Oldenburg, Germany Cluster of Excellence “Hearing4all”, Oldenburg, Germany


Audio-visual integration of speech is frequently investigated with the McGurk effect. Incongruent presentation of auditory and visual syllables may result in the perception of a third syllable, reflecting fusion of visual and auditory information. However, perception of the McGurk effect depends strongly on the stimulus material used, making comparisons across groups and studies difficult. To overcome this limitation we developed a large set of audio-visual speech material, consisting of eight different speakers (4 females and 4 males) and 12 syllable combinations. The quality of the material was evaluated with 24 young and normal-hearing subjects. The McGurk effect was studied in eight adult cochlear implant (CI) users and compared to 24 normal-hearing individuals using a probabilistic model. The comparison confirmed previous reports of stronger audio-visual integration in CI users. The audio-visual material developed in this study will be made freely available.


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How to Cite

Stropahl, M., & Debener, S. (2015). Audio-visual speech stimuli for the study of lip-reading and multi-sensory integration abilities in hearing-impaired individuals. Proceedings of the International Symposium on Auditory and Audiological Research, 5, 437–444. Retrieved from



2015/7. Novel methods for behavioral & objective assessment of hearing function