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Phase–Amplitude Coupling, Mental Health and Cognition: Implications for Adolescence
Journal article   Open access   Peer reviewed

Phase–Amplitude Coupling, Mental Health and Cognition: Implications for Adolescence

Dashiell Sacks, Paul Schwenn, Larisa McLoughlin, Jim Lagopoulos and Daniel Hermens
Frontiers in Human Neuroscience, Vol.15, pp.1-7
2021
PMCID: PMC8032979
PMID: 33841115
Appears in  Thompson Institute Research Collection
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https://doi.org/10.3389/fnhum.2021.622313View
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Abstract

Neurosciences Mental Health PAC white matter diffusion tensor imaging EEG youth cross-frequency coupling adolescence cognition Youth mental health Neuroimaging Thompson Institute Special Collection UniSC Diversity Area - Life Stages
Identifying biomarkers of developing mental disorder is crucial to improving early identification and treatment—a key strategy for reducing the burden of mental disorders. Cross-frequency coupling between two different frequencies of neural oscillations is one such promising measure, believed to reflect synchronization between local and global networks in the brain. Specifically, in adults phase–amplitude coupling (PAC) has been shown to be involved in a range of cognitive processes, including working and long-term memory, attention, language, and fluid intelligence. Evidence suggests that increased PAC mediates both temporary and lasting improvements in working memory elicited by transcranial direct-current stimulation and reductions in depressive symptoms after transcranial magnetic stimulation. Moreover, research has shown that abnormal patterns of PAC are associated with depression and schizophrenia in adults. PAC is believed to be closely related to cortico-cortico white matter (WM) microstructure, which is well established in the literature as a structural mechanism underlying mental health. Some cognitive findings have been replicated in adolescents and abnormal patterns of PAC have also been linked to ADHD in young people. However, currently most research has focused on cross-sectional adult samples. Whereas initial hypotheses suggested that PAC was a state-based measure due to an early focus on cognitive, task-based research, current evidence suggests that PAC has both state-based and stable components. Future longitudinal research focusing on PAC throughout adolescent development could further our understanding of the relationship between mental health and cognition and facilitate the development of new methods for the identification and treatment of youth mental health.

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