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Modality-general and modality-specific processes in hallucinations.

Charles Fernyhough1

  • 1Durham University, Durham, UK.

Psychological Medicine
|September 19, 2019
PubMed
Summary
This summary is machine-generated.

This study explores how cognitive and neural processes contribute to hallucinations across different senses. Understanding these modality-general mechanisms can improve diagnosis and treatment for distressing hallucinations.

Keywords:
Auditory hallucinationLuriafunctional systemsmultimodal hallucinationvisual hallucination

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Growing recognition of non-auditory hallucinations in psychosis research.
  • Need to understand shared cognitive and neural processes across hallucinatory modalities.

Purpose of the Study:

  • Investigate the modality-generality of cognitive and neural processes in hallucinations.
  • Explore the role of perceptual and reality-monitoring systems.
  • Examine top-down and bottom-up processes in hallucination substrates.
  • Address simultaneous multimodal hallucinations.

Main Methods:

  • Theoretical review and synthesis of existing research.
  • Application of a functional systems approach inspired by A. R. Luria's work.
  • Analysis of cognitive and neural mechanisms underlying hallucinations.

Main Results:

  • Hallucinations may involve modality-general cognitive and neural processes.
  • Perceptual and reality-monitoring systems play a crucial role.
  • Top-down and bottom-up processing influences hallucinatory experiences.
  • A functional systems approach can explain cross-modal patterns.

Conclusions:

  • Understanding modality-general vs. modality-specific processes is key to comprehending hallucinations.
  • This framework can inform improved diagnosis and therapeutic strategies for hallucinations.
  • Further research into shared mechanisms can benefit both clinical and non-clinical populations.