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Ambiguity in vocal expression perception: Evidence from voice morphing and its electrophysiological correlates
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DOI：10.1016/j.neuroimage.2026.121987.png)
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Abstract
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• Combined EEG, voice morphing, ERP, mTRF and MVPA to unravel neural mechanisms of ambiguous attitudinal vocal expression processing. • Pinpointed LSN (700–1600 ms) as the core neural signature distinguishing ambiguous from typical attitudinal voices. • Discovered early–late functional coupling, challenging serial models by linking acoustic encoding to late socio-cognitive inference. • Dissociated acoustic-driven (N1/P2) and valence-specific (LSN) effects via covariate-controlled LMM and mTRF analyses. • Extended multi-stage prosody models to attitudinal processing, integrating ambiguity in real-world social communication.
Keywords:
ambiguous vocal expression
vocal attitude
voice morphing
neural dynamics
mTRF
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