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Paper   IPM / Cognitive Sciences / 17429
School of Cognitive Sciences
  Title:   Conspiracy beliefs are associated with a reduction in frontal beta power and biases in categorizing ambiguous stimuli
1.  A. Narmashiri
2.  F. Akbari
3.  A. Sohrabi
4.  J. Hatami
  Status:   Published
  Journal: Heliyon
  Vol.:  9
  Year:  2023
  Supported by:  IPM
Prior beliefs, such as conspiracy beliefs, significantly influence our perception of the natural world. However, the brain activity associated with perceptual decision-making in conspiracy beliefs is not well understood. To shed light on this topic, we conducted a study examining the EEG activity of believers, and skeptics during resting state with perceptual decision-making task. Our study shows that conspiracy beliefs are related to the reduced power of beta frequency band. Furthermore, skeptics tended to misclassify ambiguous face stimuli as houses more frequently than believers. These results help to explain the differences in brain activity between believers and skeptics, especially in how conspiracy beliefs impact the categorization of ambiguous stimuli.

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