Mental time travel to the future might be reduced in sleep

Jana Speth (Lead / Corresponding author), Astrid M. Schloerscheidt, Clemens Speth

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We present a quantitative study of mental time travel to the future in sleep. Three independent, blind judges analysed a total of 563 physiology-monitored mentation reports from sleep onset, REM sleep, non-REM sleep, and waking. The linguistic tool for the mentation report analysis is based on established grammatical and cognitive-semantic theories and has been validated in previous studies. Our data indicate that REM and non-REM sleep must be characterized by a reduction in mental time travel to the future, which would support earlier physiological evidence at the level of brain function.

Original languageEnglish
Pages (from-to)180-189
Number of pages10
JournalConsciousness and Cognition
Early online date9 Dec 2016
Publication statusPublished - Feb 2017


  • REM
  • Non-REM
  • Mentation reports
  • Sleep onset
  • Hypnagogic hallucinations
  • Quantitative linguistic analysis
  • Linguistics


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