Functional MRI Time Series Generation via Wavelet-Based Image Transform and Spectral Flow Matching for Brain Disorder Identification

The paper introduces Dual-Spectral Flow Matching (DSFM), a novel fMRI generative framework that cascades dual frequency representation of BOLD signals with spectral flow matching. This method aims to synthesize high-fidelity fMRI time series to overcome limitations in data availability for brain disorder identification, by replicating complex spatiotemporal dynamics.