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Transcranial Direct Current Stimulation (tDCS) for Memory Enhancement
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Published on: September 18, 2021

Memory for everyday actions in schizophrenia.

Mathieu B Brodeur1, Marc Pelletier, Martin Lepage

  • 1Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montreal, Canada.

Schizophrenia Research
|August 1, 2009
PubMed
Summary
This summary is machine-generated.

People with schizophrenia benefit from performing actions to improve memory, but struggle with recalling how they learned them. This suggests the enactment effect in schizophrenia is largely implicit.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Action enactment enhances memory in healthy individuals compared to verbal encoding.
  • Schizophrenia is associated with cognitive deficits, including memory impairments.
  • Understanding memory processes in schizophrenia is crucial for developing effective interventions.

Purpose of the Study:

  • To investigate the enactment effect on memory for actions in individuals with schizophrenia.
  • To compare memory performance between self-performed actions, observed actions, and verbally encoded actions.
  • To explore the nature of memory benefits from action enactment in schizophrenia (implicit vs. explicit).

Main Methods:

  • Utilized an action memory paradigm with 40 stable schizophrenia participants and 24 healthy volunteers.
  • Employed three encoding conditions: self-performed actions, observed actions, and verbal encoding.
  • Assessed memory using cued-recall and source recognition tasks.

Main Results:

  • Schizophrenia participants showed significant memory improvement with self-performed actions, comparable to healthy controls in cued-recall.
  • Participants with schizophrenia exhibited substantial impairments in source recognition compared to healthy volunteers.
  • The enactment effect in schizophrenia appears to be predominantly implicit.

Conclusions:

  • Individuals with schizophrenia can benefit from the enactment effect for action memory.
  • Impaired source recognition suggests that the benefits of enactment in schizophrenia are primarily implicit.
  • Further research is needed to elucidate the neural mechanisms underlying implicit memory benefits in schizophrenia.