Rahmanovic Alena, Barnier Amanda J, Cox Rochelle E, Langdon Robyn A, Coltheart Max
Macquarie Centre for Cognitive Science (MACCS), Macquarie University, Sydney, Australia.
Cogn Neuropsychiatry. 2012;17(1):36-63. doi: 10.1080/13546805.2011.564925. Epub 2011 Jun 28.
"Instrumental hypnosis" allows researchers to model clinical symptoms in the laboratory, creating "virtual patients" with reversible disturbances in, for example, perception, action, memory, or belief. We used hypnosis to temporarily recreate somatoparaphrenia, a delusional belief that one's own limb belongs to someone else.
We compared a "Fully Formed" somatoparaphrenia suggestion with a "Factor 1 + Factor 2" suggestion that attempted to generate the delusional belief from analogues of its hypothesised underlying factors (i.e., paralysis plus disrupted critical belief evaluation). We tested and then challenged subjects' responses to these suggestions.
Although many hypnotic subjects experienced temporary paralysis, only a minority claimed their arm did not belong to them. Notably, the Fully Formed suggestion was more successful in recreating features of somatoparaphrenia than the Factor 1 + Factor 2 suggestion. In response to the challenges, some of those who developed temporary somatoparaphrenia maintained their belief throughout the hypnosis session. CONCLUSIONS. We discuss these findings in terms of the "two-factor" theory of delusions and we highlight the advantages versus disadvantages of using hypnosis to explore such delusional beliefs in the laboratory.
“工具性催眠”使研究人员能够在实验室中模拟临床症状，创造出在感知、行动、记忆或信念等方面存在可逆性障碍的“虚拟患者”。我们利用催眠来暂时重现躯体妄想性失认症，即一种认为自己的肢体属于他人的妄想信念。
我们将一种“完全形成”的躯体妄想性失认症暗示与一种“因素1 + 因素2”暗示进行了比较，后者试图从其假设的潜在因素的类似物（即麻痹加上关键信念评估的中断）中产生妄想信念。我们测试并随后挑战了受试者对这些暗示的反应。
尽管许多接受催眠的受试者经历了暂时的麻痹，但只有少数人声称他们的手臂不属于自己。值得注意的是，“完全形成”的暗示在重现躯体妄想性失认症的特征方面比“因素1 + 因素2”暗示更成功。在应对挑战时，一些出现暂时躯体妄想性失认症的人在整个催眠过程中都维持了他们的信念。结论。我们根据妄想的“双因素”理论讨论了这些发现，并强调了在实验室中使用催眠来探索此类妄想信念的优缺点。
