Valence of auditory words enhances subsequent recognition and
facilitates processing of written words: ERP and behavioral evidence.
The present study combined behavioral measures and EEG to investigate
the impact of emotional valence on both auditory and written word
processing. Participants were first presented with a series of auditory
words with varying emotional valence (positive, neutral and negative)
produced in neutral tone, which they rated according to valence level.
Subsequently they performed a surprise recognition task with written
stimuli (half being foils). Our results revealed a significant
valence/arousal effect on word recognition; written words with
high-arousal and either positive or negative valence were recognized
with higher accuracy compared to low-arousal neutral ones. EEG analyses
revealed an effect of valence only for words presented in written
format; no effects were found for auditory words. For written words,
both positive and negative valence elicited a larger P2 response in
comparison to neutral valence, indicating allocation of attentional
resources. Critically, a reduced N400 was observed only for negative
words, suggesting facilitated processing of unpleasant information
perhaps due to better encoding during the auditory presentation.
Overall, our study provides valuable insights into the cognitive
mechanisms involved in integrating emotional information presented in
distinct modalities, shedding light on the influence of valence on word