Skip to main content

Free Content Age effects on spectral electroencephalogram activity prior to dream recall

Download Article:

You have access to the full text article on a website external to Ingenta Connect.

Please click here to view this article on Wiley Online Library.

You may be required to register and activate access on Wiley Online Library before you can obtain the full text. If you have any queries please visit Wiley Online Library



Ageing is associated with marked changes in sleep timing, structure and electroencephalographic (EEG) activity. Older people exhibit less slow‐wave and spindle activity during non‐rapid eye movement (NREM) sleep, together with attenuated levels of rapid eye movement (REM) sleep as compared to young individuals. However, the extent to which these age‐related changes in sleep impact on dream processing remains largely unknown. Here we investigated NREM and REM sleep EEG activity prior to dream recall and no recall in 17 young (20–31 years) and 15 older volunteers (57–74 years) during a 40 h multiple nap protocol. Dream recall was assessed immediately after each nap. During NREM sleep prior to dream recall, older participants displayed higher frontal EEG delta activity (1–3 Hz) and higher centro‐parietal sigma activity (12–15 Hz) than the young volunteers. Conversely, before no recall, older participants had less frontal‐central delta activity and less sigma activity in frontal, central and parietal derivations than the young participants. REM sleep was associated to age‐related changes, such that older participants had less frontal‐central alpha (10–12 Hz) and beta (16–19 Hz) activity, irrespective of dream recall and no recall. Our data indicate that age‐related differences in dream recall seem to be directly coupled to specific frequency and topography EEG patterns, particularly during NREM sleep. Thus, the spectral correlates of dreaming can help to understand the cortical pathways of dreaming.

Document Type: Research Article


Affiliations: Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland

Publication date: 2012-06-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more