Auditory-visual speech perception in normal-hearing and cochlear-implant listeners

• DOI: 10.1121/1.2816573
• Publication Date: 2008-01-04T23:32:17Z
• Authors: Sheetal Desai; Ginger Stickney; Fan-Gang Zeng
• Keywords: Sensory cue; Auditory perception

The present study evaluated auditory-visual speech perception in cochlear-implant users as well normal-hearing and simulated-implant controls to delineate relative contributions of sensory experience cues. Auditory-only, visual-only, or was examined the context categorical perception, which an animated face mouthing ∕ba∕, ∕da∕, ∕ga∕ paired with synthesized phonemes from 11-token auditory continuum. A three-alternative, forced-choice method used yield percent identification scores. Normal-hearing listeners showed sharp phoneme boundaries strong reliance on cue, whereas actual simulated implant much weaker but stronger dependence visual cue. were able integrate both congruent incongruent acoustic optical cues derive relatively weak significant integration. This integration correlated duration not deafness. Compared performance, simulations cochlear could predict auditory-only performance These results suggest that altered improvised contribute users.