Adolescent neurodevelopment represents a critical period for the emergence of complex neuropsychiatric conditions. A recent study investigated triple-network functional connectivity in youth with Autism Spectrum Disorder (ASD) and Early-Onset Psychosis (EOP). This research focused on the interaction between the Default Mode Network (DMN), the Central Executive Network (CEN), and the Salience Network (SN). Consequently, researchers aimed to determine if shared social cognitive challenges in these groups arise from similar or distinct neural disruptions.

The study analyzed functional connectivity using whole-brain imaging in a diverse sample of adolescents. Therefore, findings revealed that ASD participants exhibited mixed connectivity in the DMN and overconnectivity in the CEN. Furthermore, they showed significant underconnectivity in the SN. In contrast, youth with EOP primarily showed overconnectivity in both the DMN and CEN. Notably, the SN connectivity in EOP patients remained relatively intact compared to typically developing controls. Therefore, these results highlight that while both conditions involve large-scale network changes, the specific neural drivers differ significantly.

Linking Triple-Network Functional Connectivity to Social Cognition

Behavioral analyses further clarified these neural patterns. Specifically, in the ASD group, SN underconnectivity directly correlated with poorer social cognition and emotion recognition. Conversely, in the EOP group, DMN overconnectivity predicted social challenges. These findings provide strong evidence for a transdiagnostic model of social dysfunction. Furthermore, the study identifies adolescence as a pivotal window for these network-based brain changes. Consequently, clinicians might use these distinct signatures to better differentiate between these conditions during early stages.

Additionally, direct comparisons between the clinical groups showed that ASD participants had lower SN connectivity than those with EOP. Moreover, ASD youth exhibited more varied disruptions in DMN connectivity. These distinct patterns suggest that therapeutic strategies should target different networks based on the specific diagnosis. For instance, enhancing salience processing could benefit those with ASD, whereas modulating the DMN might be more effective for EOP. Ultimately, these insights reinforce the need for personalized neurodevelopmental care.

Frequently Asked Questions

What is the triple-network model?

The triple-network model describes the dynamic interaction between the Default Mode Network, the Central Executive Network, and the Salience Network. Disruptions in these networks often underlie cognitive and social deficits in psychiatric disorders.

How does brain connectivity differ between ASD and EOP?

While both conditions show CEN overconnectivity, ASD is characterized by significant SN underconnectivity. EOP is distinguished by DMN overconnectivity with relatively preserved SN function.

Why is adolescence important for these findings?

Adolescence is a peak window for network-based brain changes. Identifying these disruptions early allows for interventions that may align with natural developmental trajectories.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Nair A et al. Triple-Network Functional Connectivity in Adolescents With Autism Spectrum Disorder Compared to Early-Onset Psychosis. Autism Res. 2026 Mar 28. doi: 10.1002/aur.70163. PMID: 41902610.

Menon V. Large-scale brain networks and psychopathology: a unifying triple network model. Trends Cogn Sci. 2011;15(10):483-506.

Abbott AE, Nair A, et al. Patterns of Atypical Functional Connectivity and Behavioral Links in Autism Differ Between Default, Salience, and Executive Networks. Cereb Cortex. 2016;26(10):4034-4045.