Selective REM-sleep deprivation does not diminish emotional memory consolidation in young healthy subjects

PLoS One. 2014 Feb 27;9(2):e89849. doi: 10.1371/journal.pone.0089849. eCollection 2014.

Abstract

Sleep enhances memory consolidation and it has been hypothesized that rapid eye movement (REM) sleep in particular facilitates the consolidation of emotional memory. The aim of this study was to investigate this hypothesis using selective REM-sleep deprivation. We used a recognition memory task in which participants were shown negative and neutral pictures. Participants (N=29 healthy medical students) were separated into two groups (undisturbed sleep and selective REM-sleep deprived). Both groups also worked on the memory task in a wake condition. Recognition accuracy was significantly better for negative than for neutral stimuli and better after the sleep than the wake condition. There was, however, no difference in the recognition accuracy (neutral and emotional) between the groups. In summary, our data suggest that REM-sleep deprivation was successful and that the resulting reduction of REM-sleep had no influence on memory consolidation whatsoever.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Emotions*
  • Female
  • Humans
  • Male
  • Memory*
  • Photic Stimulation
  • Sleep Deprivation*
  • Sleep, REM*
  • Surveys and Questionnaires
  • Young Adult

Grants and funding

This work was supported by the Deutsche Forschungsgemeinschaft: SFB 654 Sleep and Plasticity, project A9 (RG). http://www.dfg.de/. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.