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Sam Gijsen

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#machine learning Preprint Oct 2026

Beyond Decodability: Do Acoustic Factors Drive Predictions in Speech-Based Alzheimer's Assessment?

It is argued that intervention-based robustness tests should become standard for trustworthy clinical speech models and show that high predictive performance and the absence of a significant diagnostic-group difference in a measured acoustic factor are not sufficient for robustness.

Serli Kopar, Alkis Koudounas, R. Rane et al. · 0 citations

Scaling Vision Transformers for Functional MRI with Flat Maps

A new model family (CortexMAE) trained using the masked autoencoder framework is introduced, and in this setting the CortexMAE family outperforms prior models by a large margin, and the first open evaluation suite (Brainmarks) for fMRI foundation models is released.

Connor Lane, Mihir Tripathy, L. Murali et al. · 5 citations · ⚡1
Preprint Aug 2026

Motor, Cognitive, or Corpus? What Survives Cross-Lingual Transfer in Speech-Based Parkinsons Disease Detection

A layer-wise analysis of nine SSL speech backbones using a low-capacity logistic regression probe reveals that the transferred discriminative signal lacks pathological specificity, highlighting critical limitations that must be addressed before speech-based pathology recognition models can be reliably deployed in clini...

Serli Kopar, Sam Gijsen, Abner Hernandez et al. · 0 citations

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