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research article

Age effects on spectral electroencephalogram activity prior to dream recall

Chellappa, Sarah L.
•
Münch, Mirjam  
•
Knoblauch, Vera
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2011
Journal of Sleep Research

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 (20-31years) and 15 older volunteers (57-74years) during a 40h 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 (1-3Hz) and higher centro-parietal sigma activity (12-15Hz) 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 (10-12Hz) and beta (16-19Hz) 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. © 2011 European Sleep Research Society.

  • Details
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Type
research article
DOI
10.1111/j.1365-2869.2011.00947.x
Author(s)
Chellappa, Sarah L.
Münch, Mirjam  
Knoblauch, Vera
Cajochen, Christian
Date Issued

2011

Publisher

Wiley-Blackwell

Published in
Journal of Sleep Research
Volume

21

Issue

3

Start page

247

End page

256

Subjects

Ageing

•

Dream recall

•

Electroencephalographic spectral analysis

•

Non-rapid eye movement sleep

•

Rapid eye movement sleep

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LESO-PB  
Available on Infoscience
January 17, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/99577
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