RT Journal Article T1 Unraveling the mystery about the negative valence bias: does arousal account for processing differences in unpleasant words? A1 Vieitez Portas, Lucía A1 Haro Rodríguez, Juan A1 Ferré Romeu, María del Pilar A1 Padrón Rodríguez, Isabel A1 Fraga Carou, Isabel K1 Arousal K1 Valence K1 Lexical decision task K1 Visual word recognition K1 Event-related potentials (ERPs) AB Many studies have found that the emotional content of words affects visual wordrecognition. However, most of them have only considered affective valence, findinginconsistencies regarding the direction of the effects, especially in unpleasant words.Recent studies suggest that arousal might explain why not all unpleasant words elicitthe same behavior. The aim of the present research was to study the role of arousalin unpleasant word recognition. To do that, we carried out an ERP experiment inwhich participants performed a lexical decision task that included unpleasant wordswhich could vary across three levels of arousal (intermediate, high, and very high) andwords which were neutral in valence and had an intermediate level of arousal. Resultsshowed that, within unpleasant words, those intermediate in arousal evoked smallerLPC amplitudes than words that were high or very high in arousal, indicating that arousalaffects unpleasant word recognition. Critically, arousal determined whether the effect ofnegative valence was found or not. When arousal was not matched between unpleasantand neutral valenced words, the effect of emotionality was weak in the behavioraldata and absent in the ERP data. However, when arousal was intermediate in bothunpleasant and neutral valenced words, larger EPN amplitudes were reported for theformer, pointing to an early allocation of attention. Interestingly, these unpleasant wordswhich had an intermediate level of arousal showed a subsequent inhibitory effect in thatthey evoked smaller LPC amplitudes and led to slower reaction times and more errorsthan neutral words. Our results highlight the relevance that the arousal level has for thestudy of negative valence effects in word recognition PB MDPI SN 1664-1078 YR 2021 FD 2021 LK http://hdl.handle.net/10347/27252 UL http://hdl.handle.net/10347/27252 LA eng NO Vieitez, L., Haro, J., Ferré, P., Padrón, I., & Fraga, I. (2021). Unraveling the mystery about the negative valence bias: Does arousal account for processing differences in unpleasant words? Frontiers in Psychology, 0 doi:10.3389/fpsyg.2021.748726 NO This study was supported by the Spanish Ministry of Science, Innovation and Universities (PID2019-107206GB-I00 and RED2018-102615-T), the Spanish Ministry of Science and Innovation (PID2019-110583GB-I00), the Autonomous Government of Galicia (Consellería de Educación, Xunta de Galicia, GRC 2015/006), and the Universitat Rovira i Virgili (2019PFR-URV-B2-32) DS Minerva RD 24 abr 2026