An LLM-derived valence axis projects onto EEG, but additional alignment saturates the representation and reduces accuracy while residual ensembling improves results on FACED and SEED-V.
Saturation (FACED-9, EMOD backbone, V-axis target)
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A Shared Valence Axis Across Modern LLMs and Human EEG: The Saturation Regularity
An LLM-derived valence axis projects onto EEG, but additional alignment saturates the representation and reduces accuracy while residual ensembling improves results on FACED and SEED-V.