Blar i forfatter Det helsevitenskapelige fakultet "Turi, Z"

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    • Evidence for Cognitive Placebo and Nocebo Effects in Healthy Individuals 

      Turi, Z; Bjørkedal, Espen; Gunkel, Luisa; Antal, Andrea; Paulus, Walter; Mittner, Matthias (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-28)
      Inactive interventions can have significant effects on cognitive performance. Understanding the generation of these cognitive placebo/nocebo effects is crucial for evaluating the cognitive impacts of interventional methods, such as non-invasive brain stimulation (NIBS). We report both cognitive placebo and nocebo effects on reward-based learning performance induced using an active sham NIBS protocol, ...

    • Placebo Intervention Enhances Reward Learning in Healthy Individuals 

      Turi, Z; Mittner, Matthias; Paulus, W; Antal, A (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-23)
      According to the placebo-reward hypothesis, placebo is a reward-anticipation process that increases midbrain dopamine (DA) levels. Reward-based learning processes, such as reinforcement learning, involves a large part of the DA-ergic network that is also activated by the placebo intervention. Given the neurochemical overlap between placebo and reward learning, we investigated whether verbal ...