Ciência-IUL
Publicações
Descrição Detalhada da Publicação
Título Revista
Cortex
Ano (publicação definitiva)
2024
Língua
Inglês
País
França
Mais Informação
Web of Science®
Scopus
Google Scholar
Abstract/Resumo
The ability to distinguish spontaneous from volitional emotional expressions is an important social skill. How do blind individuals perceive emotional authenticity? Unlike sighted individuals, they cannot rely on facial and body language cues, relying instead on vocal cues alone. Here, we combined behavioral and ERP measures to investigate authenticity perception in laughter and crying in individuals with early- or late-blindness onset. Early-blind, late-blind, and sighted control participants (n = 17 per group, N = 51) completed authenticity and emotion discrimination tasks while EEG data were recorded. The stimuli consisted of laughs and cries that were either spontaneous or volitional. The ERP analysis focused on the N1, P2, and late positive potential (LPP). Behaviorally, early-blind participants showed intact authenticity perception, but late-blind participants performed worse than controls. There were no group differences in the emotion discrimination task. In brain responses, all groups were sensitive to laughter authenticity at the P2 stage, and to crying authenticity at the early LPP stage. Nevertheless, only early-blind participants were sensitive to crying authenticity at the N1 and middle LPP stages, and to laughter authenticity at the early LPP stage. Furthermore, early-blind and sighted participants were more sensitive than late-blind ones to crying authenticity at the P2 and late LPP stages. Altogether, these findings suggest that early blindness relates to facilitated brain processing of authenticity in voices, both at early sensory and late cognitive-evaluative stages. Late-onset blindness, in contrast, relates to decreased sensitivity to authenticity at behavioral and brain levels.
Agradecimentos/Acknowledgements
--
Palavras-chave
Blindness,Voice,Authenticity,Event-related potentials
Classificação Fields of Science and Technology
- Medicina Básica - Ciências Médicas
- Medicina Clínica - Ciências Médicas
- Psicologia - Ciências Sociais
Registos de financiamentos
Referência de financiamento | Entidade Financiadora |
---|---|
CEECIND/04298/2017 | Fundação para a Ciência e a Tecnologia |
BIAL 148/18 | Bial Foundation |