Shorter P1m Response in Children with Autism Spectrum Disorder without Intellectual Disabilities

Area of Science:

• Neuroscience
• Developmental Psychology
• Audiology

Background:

• Autism spectrum disorder (ASD) is associated with atypical auditory perception and altered auditory evoked brain responses in children.
• These auditory differences are likely linked to atypical brain maturation in individuals with ASD.

Purpose of the Study:

• To investigate auditory cortical responses in children with ASD compared to typically developed (TD) children.
• To explore the relationship between auditory brain responses and language conceptual ability in children with ASD.

Main Methods:

• Magnetoencephalography (MEG) was used to examine bilateral auditory cortical responses (P1m) in children aged 5-8 years.
• Participants included 29 children with ASD (no intellectual disability) and 46 age-matched TD controls, who passively listened to pure tones.

Main Results:

• Children with ASD exhibited significantly shorter P1m latency in the left hemisphere compared to TD children.
• A significant correlation was found between P1m latency and language conceptual ability in children with ASD, but not in TD children.

Conclusions:

• The study demonstrates atypical brain maturation in the auditory processing areas of children with ASD.
• Findings suggest a common neural basis for pure-tone sound processing and language development in ASD, with potential differences in early language network development.