Delannoy ISAN2015 PosterDownload .pdf


Nom original: Delannoy_-_ISAN2015_-_PosterDownload.pdfTitre: Présentation PowerPointAuteur: Julien Delannoy

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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
a

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.

Introduction
• 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 :

Exp Night

Sleep

PANAS

•a

PANAS

•a

Ref Night
Movie

Sleep

• 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).
Pre-Sleep

Sleep period
Hypnogram

Sleep stage ratio

100%

100%

75%

75%

50%

50%

25%

25%

-30%

Movie

Neutral movie  No change
Negative movie  Negative affect increase
Positive Movie  Positive affect increase
Emotional Movies  Induce
Congruent pre-sleep emotional states

25%

0%

Ref

1

REM

0

4

-1

NREM2

-2

2

NREM3

-3

NREM3

0

-4

0

0%

1

2

3 4 5
Daytime

6

7

EDRf is higher during NREM3

Arousal *

6%
6%
5%
5%
4%
4%
3%
3%
2%
2%
1%
1%
0%
-1%

6

NREM1

0,4

ΔExp-Ref EDRf during
NREM 3 (EDR/min)

Valence *

0%

50%

Wake

REM

Movie

30%

75%

ΔExp-Ref REM sleep rate

ΔExp-Ref Positive affect

60%

Wake
NREM1
NREM2

0%

-30%

100%

Positive

Exp

0%

Neutral

Exp
Ref

30%

Negative

EDR frequency
(EDR/min)

ΔExp-Ref Negative affect

60%

Valence *

Sympathetic activity

Sleep Stage

Induced Emotional States (PANAS)

Exp
Ref

Results

Valence *

0,0

-0,4

-0,8

Movie

Movie

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

Discussion
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.

Conclusion
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.

Contact:
Julien.Delannoy@univ-lille2.fr
Or
Henrique.Sequeira@univ-lille1.fr

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