Department of Psychology, University of Turin, Turin, Italy.
Department of Neuroscience, University of Turin, AOU Città della Salute e della Scienza, Turin, Italy.
Sci Rep. 2023 Aug 30;13(1):14176. doi: 10.1038/s41598-023-41345-5.
The feeling of controlling one's own actions and, through them, impacting the external environment (i.e. Sense of Agency-SoA) can be relevant in the eating disorders (EDs) symptomatology. Yet, it has been poorly investigated. This study aims to implicitly assess SoA exploiting the Sensory Attenuation paradigm in two groups of EDs patients (Anorexia Nervosa Restrictive and Anorexia Nervosa Binge-Purging or Bulimia Nervosa) compared to a control group. We find that controls perceive self-generated stimuli as less intense than other-generated ones showing the classic pattern of sensory attenuation. By contrast, EDs patients show the opposite pattern, with self-generated perceived as more intense than other-generated stimuli. This result indicates an alteration of the implicit component of the feeling of control in EDs patients, thus suggesting a potential implication of these results for the clinical practice and the treatment of EDs symptomatology.
控制自己的行为并通过行为影响外部环境的感觉（即自我归因感-SOA）在饮食失调（EDs）症状中可能很重要，但目前研究较少。本研究旨在通过感觉衰减范式在两组 EDs 患者（神经性厌食限制型和神经性贪食-暴食型或贪食症）和对照组中进行隐性评估 SOA。我们发现，与他人产生的刺激相比，对照组会认为自己产生的刺激的强度更低，表现出经典的感觉衰减模式。相比之下，EDs 患者则表现出相反的模式，即自己产生的刺激比他人产生的刺激感觉更强烈。这一结果表明，EDs 患者的自我控制感觉的隐性成分发生了改变，这表明这些结果可能对 EDs 症状的临床实践和治疗有一定的启示。
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