Multidimensional brain-age prediction reveals altered brain developmental trajectory in psychiatric disorders

心理学 大脑发育 神经科学 神经影像学 病态的 发展心理学 医学 病理
作者
Xin Niu,Alexei Taylor,Russell T. Shinohara,John Kounios,Fengqing Zhang
出处
期刊:Cerebral Cortex [Oxford University Press]
卷期号:32 (22): 5036-5049 被引量:11
标识
DOI:10.1093/cercor/bhab530
摘要

Abstract Brain-age prediction has emerged as a novel approach for studying brain development. However, brain regions change in different ways and at different rates. Unitary brain-age indices represent developmental status averaged across the whole brain and therefore do not capture the divergent developmental trajectories of various brain structures. This staggered developmental unfolding, determined by genetics and postnatal experience, is implicated in the progression of psychiatric and neurological disorders. We propose a multidimensional brain-age index (MBAI) that provides regional age predictions. Using a database of 556 individuals, we identified clusters of imaging features with distinct developmental trajectories and built machine learning models to obtain brain-age predictions from each of the clusters. Our results show that the MBAI provides a flexible analysis of region-specific brain-age changes that are invisible to unidimensional brain-age. Importantly, brain-ages computed from region-specific feature clusters contain complementary information and demonstrate differential ability to distinguish disorder groups (e.g., depression and oppositional defiant disorder) from healthy controls. In summary, we show that MBAI is sensitive to alterations in brain structures and captures distinct regional change patterns that may serve as biomarkers that contribute to our understanding of healthy and pathological brain development and the characterization and diagnosis of psychiatric disorders.
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