Hypnotic illusions and clinical delusions: hypnosis as a research method

Area of Science:

• Psychopathology
• Cognitive Neuroscience
• Experimental Psychology

Background:

• Hypnosis serves as a valuable tool for investigating phenomena beyond its immediate scope.
• Instrumental hypnosis research explores experimental psychopathology.
• Hypnosis has been historically and is currently used to create and study temporary, clinically relevant delusions.

Purpose of the Study:

• To explore the utility of hypnosis in creating and studying temporary delusions.
• To map features and processes shared by clinical and hypnotic delusions.
• To investigate the impact of these delusions on information processing, including autobiographical memory.

Main Methods:

• Detailed description of constructing hypnotic paradigms to model delusions.
• Utilizing hypnotic analogues for specific delusions like mirrored-self misidentification, somatoparaphrenia, alien control, and identity delusions.
• Mapping features, processes, and impact on information processing.

Main Results:

• Hypnotic analogues successfully produce compelling delusions.
• These hypnotic delusions exhibit striking similarities to clinical delusions in phenomenology and resistance to challenge.
• Autobiographical memory during delusions is comparable between hypnotic and clinical presentations.

Conclusions:

• Hypnotic analogues are valuable models for studying delusions.
• Acknowledges methodological limitations such as response indexing and alternative explanations.
• Emphasizes the need for converging data and ongoing dialogue between clinical and laboratory settings.