Comparing and Scaling fMRI Features for Brain-Behavior Prediction

• URL: http://arxiv.org/abs/2507.20601v1
• Date: Mon, 28 Jul 2025 08:13:08 GMT
• Title: Comparing and Scaling fMRI Features for Brain-Behavior Prediction
• Authors: Mikkel Schöttner Sieler, Thomas A. W. Bolton, Jagruti Patel, Patric Hagmann,
• Abstract summary: We study 979 subjects from the Human Connectome Project Young Adult dataset.<n>We predict summary scores for mental health, cognition, processing speed, and substance use, as well as age and sex.<n>FC comes out as the best feature for predicting cognition, age, and sex.
• Score: 1.0832932170181544
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Predicting behavioral variables from neuroimaging modalities such as magnetic resonance imaging (MRI) has the potential to allow the development of neuroimaging biomarkers of mental and neurological disorders. A crucial processing step to this aim is the extraction of suitable features. These can differ in how well they predict the target of interest, and how this prediction scales with sample size and scan time. Here, we compare nine feature subtypes extracted from resting-state functional MRI recordings for behavior prediction, ranging from regional measures of functional activity to functional connectivity (FC) and metrics derived with graph signal processing (GSP), a principled approach for the extraction of structure-informed functional features. We study 979 subjects from the Human Connectome Project Young Adult dataset, predicting summary scores for mental health, cognition, processing speed, and substance use, as well as age and sex. The scaling properties of the features are investigated for different combinations of sample size and scan time. FC comes out as the best feature for predicting cognition, age, and sex. Graph power spectral density is the second best for predicting cognition and age, while for sex, variability-based features show potential as well. When predicting sex, the low-pass graph filtered coupled FC slightly outperforms the simple FC variant. None of the other targets were predicted significantly. The scaling results point to higher performance reserves for the better-performing features. They also indicate that it is important to balance sample size and scan time when acquiring data for prediction studies. The results confirm FC as a robust feature for behavior prediction, but also show the potential of GSP and variability-based measures. We discuss the implications for future prediction studies in terms of strategies for acquisition and sample composition.

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