Adolescence marks a critical developmental window for all teenagers, including those with autism spectrum disorder (ASD), who are eager to form new social connections despite considerable challenges. A recent groundbreaking study led by researchers at Stanford Medicine reveals striking differences in how autistic teenagers’ brains respond to unfamiliar voices compared to their neurotypical peers. Published in the Proceedings of the National Academy of Sciences, this research sheds light on how reward and attention circuits develop differently in autism during adolescence.
Typically developing teens show heightened activation in brain regions associated with reward and salience when hearing new voices, a neural adaptation that supports expanding social networks. However, the study finds that this neural tuning to unfamiliar voices fails to increase in adolescents with autism. In fact, for some autistic individuals with more severe symptoms, responsiveness to novel voices diminishes with age, suggesting a divergent developmental trajectory of voice processing circuits.
Intriguingly, while neurotypical adolescents become increasingly attuned to unfamiliar voices, teens with autism demonstrate the opposite pattern: their neural responses increasingly favor familiar voices, particularly that of their mother. This heightened preference is strongest among those with the most pronounced social impairments, potentially reflecting a compensatory reliance on familiar auditory social cues amid broader social communication difficulties.
The research involved functional magnetic resonance imaging (fMRI) of 79 children and adolescents aged 7 to 17, including 39 diagnosed with ASD and 40 matched neurotypical controls. Participants listened to nonsense words spoken by their mothers and strangers, as well as environmental sounds, allowing isolation of voice-specific brain responses without confounds from language comprehension. This design enabled the researchers to map how reward and salience networks evolve in response to socially relevant auditory stimuli across development.
These findings emphasize that autism is not a static condition but one marked by dynamic changes in brain function over time. The altered maturation of voice-reward circuitry may underpin the persistent social difficulties experienced by many autistic teens, as the normal adolescent drive to engage with new social partners appears blunted. The study’s lead author, Daniel Abrams, PhD, highlights adolescence as a critical period when targeted interventions could capitalize on ongoing brain plasticity to enhance social engagement skills.
Currently, autism therapies focus predominantly on early childhood, leaving a paucity of tailored treatments for teens. This research advocates for expanded efforts to develop adolescence-specific interventions that address the unique neural and social challenges of this age group. Given the strong desire among autistic teens to build friendships and social bonds, understanding and leveraging these neurodevelopmental insights could open new avenues for effective therapy.
Overall, this study advances our comprehension of the neurobiological underpinnings of social communication in autism throughout adolescence, spotlighting critical differences in how autistic teens’ brains process voices. By illuminating the developmental divergence in voice processing, it offers hope for novel, brain-based strategies to support social development in autism during a formative life stage.
Subject of Research: People
Article Title: Developmental divergence in voice-reward circuitry differentiates autistic from typically developing children and adolescents
News Publication Date: 13-Jul-2026
Keywords: Autism, Adolescence, Social Neuroscience, Brain Development, Voice Processing, fMRI, Reward Circuitry
