The Identity Trap in EEG Foundation Models: A Diagnostic Audit

In three linesDiagnostic study of EEG foundation models reveals the "Identity Trap": models (LaBraM, CBraMod, REVE) conflate subject identity with clinical biomarkers. FMScope, a 5-diagnostic protocol, shows subject variance dominates 13-89x chance and persists after fine-tuning (+10-63 pp). Erasing this axis improves label decoding (+6-12 pp).

Summary generated by Claude — human-verified