Placebo-suggestion modulates conflict resolution in the Stroop Task
| Autor: | Hichem Slama, Emilie Caspar, Pedro A. Magalhães De Saldanha da Gama, Axel Cleeremans, Wim Gevers |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Dissociation (neuropsychology) Color vision Social Sciences lcsh:Medicine EXPECTANCY Electroencephalography Brain waves Biology Audiology Placebo behavioral disciplines and activities Conflict resolution Young Adult ANALGESIA Cognition Stroop task medicine Humans Attention Suggestion lcsh:Science EXPECTATIONS INTERFERENCE Multidisciplinary HYPNOSIS medicine.diagnostic_test Negotiating MEMORY lcsh:R Placebo-suggestion HYPNOTIC SUGGESTION Sciences humaines VARIABILITY IMAGINATIVE SUGGESTIBILITY EXPERIENCE Female lcsh:Q Color Perception psychological phenomena and processes Stroop effect Research Article |
| Zdroj: | PLoS ONE, Vol 8, Iss 10, p e75701 (2013) PLOS ONE PLoS ONE PloS one, 8 (10 |
| ISSN: | 1932-6203 |
| Popis: | Here, we ask whether placebo-suggestion (without any form of hypnotic induction) can modulate the resolution of cognitive conflict. Naïve participants performed a Stroop Task while wearing an EEG cap described as a “brain wave” machine. In Experiment 1, participants were made to believe that the EEG cap would either enhance or decrease their color perception and performance on the Stroop task. In Experiment 2, participants were explicitly asked to imagine that their color perception and performance would be enhanced or decreased (non-hypnotic imaginative suggestion). We observed effects of placebo-suggestion on Stroop interference on accuracy: interference was decreased with positive suggestion and increased with negative suggestion compared to baseline. Intra-individual variability was also increased under negative suggestion compared to baseline. Compliance with the instruction to imagine a modulation of performance, on the other hand, did not influence accuracy and only had a negative impact on response latencies and on intra-individual variability, especially in the congruent condition of the Stroop Task. Taken together, these results demonstrate that expectations induced by a placebo-suggestion can modulate our ability to resolve cognitive conflict, either facilitating or impairing response accuracy depending on the suggestion’s contents. Our results also demonstrate a dissociation between placebo-suggestion and non-hypnotic imaginative suggestion info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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