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Working Memory01:24

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The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
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Related Experiment Video

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Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
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Improving working memory performance in brain-injured patients using hypnotic suggestion.

Jonas K Lindeløv1,2, Rikke Overgaard2, Morten Overgaard2

  • 1CCN, Dept. of Psychology and Communication, Aalborg University, 9220 Aalborg, Denmark.

Brain : a Journal of Neurology
|March 24, 2017
PubMed
Summary

Hypnotic suggestion effectively restored working memory in brain-injured patients. This intervention showed lasting improvements, surpassing control groups and reaching healthy population levels.

Keywords:
brain injuryexecutive functionsuggestion, stroke rehabilitationworking memory

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Area of Science:

  • Neuroscience
  • Psychology
  • Rehabilitation Medicine

Background:

  • Working memory impairment is common after brain injury, with limited success in current rehabilitation.
  • Existing treatments for brain injury-related working memory deficits are largely ineffective.

Purpose of the Study:

  • To investigate the efficacy of hypnotic suggestion in restoring working memory functioning in patients with acquired brain injury.
  • To determine if hypnotic suggestion can lead to long-term improvements in working memory.

Main Methods:

  • A randomized actively controlled trial was conducted involving patients with acquired brain injury.
  • Participants received four 1-hour sessions of hypnotic suggestion focused on restoring pre-injury working memory levels.
  • Active and passive control groups were used, with a crossover design for the active control group.

Main Results:

  • Hypnotic suggestion resulted in medium-sized improvements compared to active controls and very large improvements compared to passive controls.
  • Improvements were sustained long-term, with no deterioration observed after a 6.7-week no-contact period.
  • Both groups achieved working memory performance at or above the healthy population mean.

Conclusions:

  • Hypnotic suggestion, when appropriately framed, is an effective method for improving working memory in individuals with acquired brain injury.
  • The rapid and consistent improvements suggest a potential for residual information processing capacity in the injured brain.
  • This approach offers a promising avenue for rehabilitation of cognitive deficits following brain injury.