The neural bases of language processing during social and non-social contexts: a fNIRS study of autistic and neurotypical preschool-aged children.
M Pecukonis, J Gerson, H Gustafson-Alm and 4 others
PMID 40770353WHAT IT FOUND
Neurotypical preschoolers showed stronger brain response to live language than recorded language in the right TPJ.
Autistic children showed no group-level difference. However, within the autistic group, children with higher language skills showed a greater neural difference between live and recorded language.
Key findings
01Neurotypical children showed significantly greater brain response during live language than recorded language in the right TPJ during the early time window, a finding that survived correction for multiple comparisons.
02Autistic children showed no significant differences in brain response between live and recorded language conditions in any region of interest after correction for multiple comparisons.
03Across the whole sample, higher language skills were associated with a greater difference in brain response to live versus recorded language in the right TPJ, but this association was driven by the autistic group.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample size was small (31 children), and many analyses were underpowered. Most findings in the autistic group and between-group comparisons did not survive correction for multiple comparisons. Signal quality issues led to the exclusion of several participants, particularly in the autistic group for certain brain regions. The study design is cross-sectional, so it cannot determine if brain response differences cause language skills or vice versa. The fNIRS method has limited spatial resolution compared to fMRI.
Declared interests
The study was funded by the National Institute on Deafness and Other Communication Disorders. No other conflicts of interest were reported.
The easy way to misread this
Do not interpret the lack of group-level differences in autistic children as evidence that live and recorded language are neurologically equivalent for them. The correlation analysis showed that within the autistic group, those with higher language skills did show a neural difference, suggesting that individual variability, not a uniform group effect, is the key finding.