Atypical auditory perception is widely reported in association with autism. In the current study, we recorded the brain responses of children with autism to dichotic pitch stimuli, in which inter-aural timing differences result in the illusory perception of a pitch sound spatially segregated from a carrier white noise. MEG responses of ten 8- to 12-year-old children with autism and ten age-matched typically developing children were recorded as they viewed a movie while ignoring the auditory stimuli. MEG data were projected onto sources in bilateral auditory cortex and event-related fields for a control stimulus (no inter-aural timing difference) were subtracted from responses to the illusory pitch stimulus. Children with autism evidenced a component in this difference waveform at around 50 ms, which was not present in the control group. The results demonstrate that individuals with autism are sensitive to inter-aural timing differences and provide further evidence for atypical auditory processing in at least some individuals on the autism spectrum.
|Number of pages||1|
|Journal||Clinical EEG and neuroscience|
|Publication status||Published - 2012|
|Event||Australasian Cognitive Neurosciences Conference (21st : 2011) - Sydney|
Duration: 9 Dec 2011 → 12 Dec 2011
Brock, J., Reid, M., Bzishvili, S., Hautus, M., & Johnson, B. W. (2012). Atypical brain responses to illusory auditory pitch in children with autism. Clinical EEG and neuroscience, 43(3), 217. https://doi.org/10.1177/1550059412444821