Delannoy ISAN2015 PosterDownload .pdf
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PRE-SLEEP EMOTIONAL INDUCTION AFFECTS REM SLEEP RATE
AND SYMPATHETIC ACTIVITY DURING SLEEP
J. Delannoya; O. Mandai b; J. Honoré a; T. Kobayashi b; H. Sequeira a,c
SCALab, CNRS UMR 9193, University of Lille, France.
b Sleep Research Center, Ashikaga Institute of Technology, Japan.
C Neurosciences, University of Lille, Science and Technology, France.
• The effect of diurnal emotional experience on sleep stages distribution remains unclear, especially for positive one.
• But, it seems to notably affect Rapid Eye Movement (REM) sleep and Non-REM stage 3 (NREM3) sleep.
• Electrodermal activity, a marker of sympathetic activity, differs according to :
• Emotional arousal during wake
→ higher frequency of electrodermal responses (EDRf) for aroused states.
• Sleep stages
→ higher EDRf during NREM3 sleep.
• Aims : to explore the effects of pre-sleep induced emotional states, on sleep stage distribution and
EDRf, as potential markers of emotional processing during sleep.
Material and methods
• Twelve Japanese right-handed, males and volunteers (age: 20.1 ± 1 yr), were paid for their participation.
Each participant was recorded during nine nights distributed in 3 Sessions.
• Each session comprised: a Reference night followed by an Experimental [emotional induction] and a Recovery nights :
• Stimuli: Emotional Movies [Negative, Neutral, or Positive; ~ 20 min each] were used for inducing emotional states.
• Pre-sleep evaluation: Positive and Negative Affect Scale (PANAS)
• Statistical Analyses: Planned comparisons between Exp and Ref for Arousal and Valence effects (threshold: p ≤ 0.05).
Sleep stage ratio
Neutral movie No change
Negative movie Negative affect increase
Positive Movie Positive affect increase
Emotional Movies Induce
Congruent pre-sleep emotional states
3 4 5
EDRf is higher during NREM3
ΔExp-Ref EDRf during
NREM 3 (EDR/min)
ΔExp-Ref REM sleep rate
ΔExp-Ref Positive affect
ΔExp-Ref Negative affect
Induced Emotional States (PANAS)
REM sleep rate is higher for negative and
positive movies than for neutral ones.
EDRf during NREM3 is higher after negative
movie than after neutral or positive ones.
Pre-sleep emotional states Increase
REM sleep rate
Pre-sleep emotional states Modulate
Sympathetic activity during NREM3
1. This study shows that emotional movies can induce congruent pre-sleep emotional states.
2. During the sleep period, an increase of REM sleep is observed after pre-sleep induced emotional states.
3. Autonomic activity during NREM3 sleep is impacted by pre-sleep emotional information.
This study offers interesting perspectives related to the influence of pre-sleep emotional states on sleep regulation and suggests
that electrodermal activity could be an useful neurophysiological indicator of emotional processes during sleep.
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