Abstract:
:Normal-learning children (NL) and children with learning disabilities (LD) reported their perceptions of unisensory (auditory or visual), concordant audiovisual (e.g. visual /apa/ and auditory /apa/) and conflicting (e.g. visual /aka/ and auditory /apa/) speech stimuli in quiet and noise (0 dB and -12 dB signal-to-noise ratio, SNR). In normal populations, watching such conflicting combinations typically changes auditory percepts ('McGurk effect'). NL and LD children identified unisensory auditory and congruent audiovisual stimuli similarly in all conditions. Despite being less accurate identifying unisensory visual stimuli, LD children were more likely than NL children to report hearing only the visual component of incongruent audiovisual stimuli at -12 dB SNR. Furthermore, LD children with brainstem timing deficits demonstrated a distinctive pattern of audiovisual perception. The results suggest that the perception of simultaneous auditory and visual speech differs between NL and LD children, perhaps reflecting variations in neural processing underlying multisensory integration.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Hayes EA,Tiippana K,Nicol TG,Sams M,Kraus Ndoi
10.1016/s0304-3940(03)00971-6keywords:
subject
Has Abstractpub_date
2003-11-06 00:00:00pages
46-50issue
1eissn
0304-3940issn
1872-7972pii
S0304394003009716journal_volume
351pub_type
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