1. Individual characteristics outperform resting-state fMRI for the prediction of behavioral phenotypes.
- Author
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Omidvarnia, Amir, Sasse, Leonard, Larabi, Daouia I., Raimondo, Federico, Hoffstaedter, Felix, Kasper, Jan, Dukart, Jürgen, Petersen, Marvin, Cheng, Bastian, Thomalla, Götz, Eickhoff, Simon B., and Patil, Kaustubh R.
- Subjects
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FUNCTIONAL magnetic resonance imaging , *PHENOTYPES , *FUNCTIONAL connectivity , *MACHINE learning , *PREDICTION models , *FORECASTING - Abstract
In this study, we aimed to compare imaging-based features of brain function, measured by resting-state fMRI (rsfMRI), with individual characteristics such as age, gender, and total intracranial volume to predict behavioral measures. We developed a machine learning framework based on rsfMRI features in a dataset of 20,000 healthy individuals from the UK Biobank, focusing on temporal complexity and functional connectivity measures. Our analysis across four behavioral phenotypes revealed that both temporal complexity and functional connectivity measures provide comparable predictive performance. However, individual characteristics consistently outperformed rsfMRI features in predictive accuracy, particularly in analyses involving smaller sample sizes. Integrating rsfMRI features with demographic data sometimes enhanced predictive outcomes. The efficacy of different predictive modeling techniques and the choice of brain parcellation atlas were also examined, showing no significant influence on the results. To summarize, while individual characteristics are superior to rsfMRI in predicting behavioral phenotypes, rsfMRI still conveys additional predictive value in the context of machine learning, such as investigating the role of specific brain regions in behavioral phenotypes. Individual characteristics tend to over-perform fMRI-based metrics in the prediction of behavioral measures. However, the combination of both metrics can increase predictive accuracy, suggesting that fMRI-based metrics can successfully complement individual characteristics, mainly in large datasets. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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