Publicação
Cognitive control and emotion in hallucination-proneness : exploring audiovisual cognitive and emotional conflict
| Resumo: | Proneness to unusual experiences such as hallucinations, has been proposed to exist on a continuum. Accordingly, cognitive mechanisms that underpin hallucinations may act as markers of this continuum. Cognitive control and emotion play a key role in the production of hallucinations and in this dissertation Zinchenko and colleagues’ (2015) paradigm is replicated to test if their interaction acts as a marker of a continuum underlying proneness to unusual experiences. Emotion has been found to trigger cognitive control processes and facilitate conflict processing in both emotional and cognitive conflict. When the target dimension of a stimulus is emotional, conflict processing is sped up in both conflict types. We tested if hallucination proneness modulated this emotioncognitive control interaction. The paradigm probes emotion’s influence over cognitive control in two tasks, one for each type of conflict. In cognitive conflict, participants categorized spoken vowels and in emotional conflict their emotional valence, while visual information was congruent or incongruent. Emotion was task relevant in emotional conflict, but not in cognitive conflict type. The dissertation includes the analysis of the N100 ERP in cognitive conflict. Our results show that the early dynamic interplay between emotion and cognitive control is not a marker of a cognitive continuum underlying proneness to unusual experiences. Additionally, emotional target dimension facilitated emotional conflict processing, as shown in a reduced reaction time conflict effect. However, contrary to the literature, this was not the case for cognitive conflict. |
|---|---|
| Autores principais: | Naumann, Lucas Wilfried Lopes |
| Assunto: | Neuropsicologia Resolução de conflitos Emoção Dissertações de mestrado - 2021 |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Proneness to unusual experiences such as hallucinations, has been proposed to exist on a continuum. Accordingly, cognitive mechanisms that underpin hallucinations may act as markers of this continuum. Cognitive control and emotion play a key role in the production of hallucinations and in this dissertation Zinchenko and colleagues’ (2015) paradigm is replicated to test if their interaction acts as a marker of a continuum underlying proneness to unusual experiences. Emotion has been found to trigger cognitive control processes and facilitate conflict processing in both emotional and cognitive conflict. When the target dimension of a stimulus is emotional, conflict processing is sped up in both conflict types. We tested if hallucination proneness modulated this emotioncognitive control interaction. The paradigm probes emotion’s influence over cognitive control in two tasks, one for each type of conflict. In cognitive conflict, participants categorized spoken vowels and in emotional conflict their emotional valence, while visual information was congruent or incongruent. Emotion was task relevant in emotional conflict, but not in cognitive conflict type. The dissertation includes the analysis of the N100 ERP in cognitive conflict. Our results show that the early dynamic interplay between emotion and cognitive control is not a marker of a cognitive continuum underlying proneness to unusual experiences. Additionally, emotional target dimension facilitated emotional conflict processing, as shown in a reduced reaction time conflict effect. However, contrary to the literature, this was not the case for cognitive conflict. |
|---|