期刊
HUMAN BRAIN MAPPING
卷 43, 期 4, 页码 1403-1418出版社
WILEY
DOI: 10.1002/hbm.25732
关键词
behavior; brain network; dynamic functional connectivity; functional MRI; logistic regression; rest; task
资金
- Melbourne Postgraduate Scholarship
- NHMRC [APP1118153]
- LIEF Grant [LE170100200]
Behavioral traits were found to be closely related to task performance and the accuracy of classification between tasks and rest, with individual variation in behavior playing a significant role. The study used a novel method called multi-timepoint pattern analysis (MTPA) to capture dynamic adaptations of functional brain networks to changing cognitive demands. The findings suggest that interindividual variation in behavior should be considered when investigating context-dependent dynamic functional connectivity.
Behavioral traits are rarely considered in task-evoked functional magnetic resonance imaging (MRI) studies, yet these traits can affect how an individual engages with the task, and thus lead to heterogeneity in task-evoked brain responses. We aimed to investigate whether interindividual variation in behavior associates with the accuracy of predicting task-evoked changes in the dynamics of functional brain connectivity measured with functional MRI. We developed a novel method called multi-timepoint pattern analysis (MTPA), in which binary logistic regression classifiers were trained to distinguish rest from each of 7 tasks (i.e., social cognition, working memory, language, relational, motor, gambling, emotion) based on functional connectivity dynamics measured in 1,000 healthy adults. We found that connectivity dynamics for multiple pairs of large-scale networks enabled individual classification between task and rest with accuracies exceeding 70%, with the most discriminatory connections relatively unique to each task. Crucially, interindividual variation in classification accuracy significantly associated with several behavioral, cognition and task performance measures. Classification between task and rest was generally more accurate for individuals with higher intelligence and task performance. Additionally, for some of the tasks, classification accuracy improved with lower perceived stress, lower aggression, higher alertness, and greater endurance. We conclude that heterogeneous dynamic adaptations of functional brain networks to changing cognitive demands can be reliably captured as linearly separable patterns by MTPA. Future studies should account for interindividual variation in behavior when investigating context-dependent dynamic functional connectivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据