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Related Concept Videos

Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
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Related Experiment Video

Updated: Jan 10, 2026

Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging
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Mapping Resting-State Brain Functional Specialization to Neurotransmitter Profiles in Autism Spectrum Disorder.

Dafa Shi1, Jitian Guan1, Guangsong Wang2

  • 1Department of Radiology, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China.

CNS Neuroscience & Therapeutics
|November 24, 2025
PubMed
Summary
This summary is machine-generated.

Autism spectrum disorder (ASD) involves brain activity abnormalities linked to multiple neurotransmitter systems. This study reveals specific co-localizations and correlations with clinical features, offering new therapeutic targets.

Keywords:
autism spectrum disorderneuropharmacologyneurotransmittersregional homogeneityspatial correlation analysis

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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Psychiatry

Background:

  • Autism spectrum disorder (ASD) is a prevalent neurodevelopmental disorder with diagnostic and treatment challenges.
  • Understanding neurotransmitter system impairments is crucial for elucidating ASD mechanisms and identifying therapeutic targets.
  • This study investigates spatial associations between ASD-related brain activity and neurotransmitter distributions.

Purpose of the Study:

  • To identify abnormal neurotransmitter alterations in ASD patients by examining spatial associations with brain activity patterns.
  • To assess the relationship between these spatial associations and clinical features of ASD.
  • To provide a foundation for novel therapeutic strategies targeting neurotransmitter systems in ASD.

Main Methods:

  • Compared regional homogeneity (ReHo) in brain activity between 44 ASD patients and 132 typically developing controls (TDCs).
  • Evaluated associations between spatial patterns of ReHo alterations and densities of multiple neurotransmitter systems in ASD.
  • Analyzed correlations between these associations and clinical characteristics using standardized scales.

Main Results:

  • ASD patients showed brain activity abnormalities in visuomotor networks, cerebro-cerebellar circuits, angular gyrus, and limbic areas compared to TDCs.
  • These atypical brain activity patterns significantly co-localized with serotonergic, glutamatergic, GABAergic, dopaminergic, noradrenergic, cholinergic, and cannabinoid systems.
  • Negative correlations were observed between social awareness/responsiveness scores and serotonin 5-HT2a receptor co-localization.

Conclusions:

  • This is the first systematic analysis demonstrating abnormalities across multiple neurotransmitter systems in ASD.
  • The findings enhance understanding of ASD's underlying mechanisms.
  • Results provide a basis for developing targeted therapeutic interventions for ASD.