Acute exposure to evening blue-enriched light impacts on human sleep
Acute exposure to evening blue-enriched light impacts on human sleep
Light in the short wavelength range (blue light: 446–483 nm) elicits direct effects on human melatonin secretion, alertness and cognitive performance via non-image-forming photoreceptors. However, the impact of blue-enriched polychromatic light on human sleep architecture and sleep electroencephalographic activity remains fairly unknown. In this study we investigated sleep structure and sleep electroencephalographic characteristics of 30 healthy young participants (16 men, 14 women; age range 20–31 years) following 2 h of evening light exposure to polychromatic light at 6500 K, 2500 K and 3000 K. Sleep structure across the first three non-rapid eye movement non-rapid eye movement – rapid eye movement sleep cycles did not differ significantly with respect to the light conditions. All-night non-rapid eye movement sleep electroencephalographic power density indicated that exposure to light at 6500 K resulted in a tendency for less frontal non-rapid eye movement electroencephalographic power density, compared to light at 2500 K and 3000 K. The dynamics of non-rapid eye movement electroencephalographic slow wave activity (2.0–4.0 Hz), a functional index of homeostatic sleep pressure, were such that slow wave activity was reduced significantly during the first sleep cycle after light at 6500 K compared to light at 2500 K and 3000 K, particularly in the frontal derivation. Our data suggest that exposure to blue-enriched polychromatic light at relatively low room light levels impacts upon homeostatic sleep regulation, as indexed by reduction in frontal slow wave activity during the first non-rapid eye movement episode.
573-580
Chellappa, SL
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Steiner, R
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Oelhafen, P
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Lang, D
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Götz, T
476691a8-d896-409c-8073-386508c7368b
Krebs, J
420887b2-1840-4667-9372-748770ee6f0e
Cajochen, C
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20 March 2013
Chellappa, SL
516582b5-3cba-4644-86c9-14c91a4510f2
Steiner, R
c2a5c81a-7490-4326-b1e0-040f65925bf5
Oelhafen, P
e9c28423-b9b2-4ae1-9d4d-288076fc4218
Lang, D
930ac2ed-a575-419f-af64-a7965a161638
Götz, T
476691a8-d896-409c-8073-386508c7368b
Krebs, J
420887b2-1840-4667-9372-748770ee6f0e
Cajochen, C
f605e720-e417-45dc-9b5c-244b1a1d6265
Chellappa, SL, Steiner, R, Oelhafen, P, Lang, D, Götz, T, Krebs, J and Cajochen, C
(2013)
Acute exposure to evening blue-enriched light impacts on human sleep.
Journal of Sleep Research, 22 (5), .
(doi:10.1111/jsr.12050).
Abstract
Light in the short wavelength range (blue light: 446–483 nm) elicits direct effects on human melatonin secretion, alertness and cognitive performance via non-image-forming photoreceptors. However, the impact of blue-enriched polychromatic light on human sleep architecture and sleep electroencephalographic activity remains fairly unknown. In this study we investigated sleep structure and sleep electroencephalographic characteristics of 30 healthy young participants (16 men, 14 women; age range 20–31 years) following 2 h of evening light exposure to polychromatic light at 6500 K, 2500 K and 3000 K. Sleep structure across the first three non-rapid eye movement non-rapid eye movement – rapid eye movement sleep cycles did not differ significantly with respect to the light conditions. All-night non-rapid eye movement sleep electroencephalographic power density indicated that exposure to light at 6500 K resulted in a tendency for less frontal non-rapid eye movement electroencephalographic power density, compared to light at 2500 K and 3000 K. The dynamics of non-rapid eye movement electroencephalographic slow wave activity (2.0–4.0 Hz), a functional index of homeostatic sleep pressure, were such that slow wave activity was reduced significantly during the first sleep cycle after light at 6500 K compared to light at 2500 K and 3000 K, particularly in the frontal derivation. Our data suggest that exposure to blue-enriched polychromatic light at relatively low room light levels impacts upon homeostatic sleep regulation, as indexed by reduction in frontal slow wave activity during the first non-rapid eye movement episode.
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More information
Accepted/In Press date: 5 February 2013
Published date: 20 March 2013
Additional Information:
We thank Dr. Gilles Vandewalle for the interesting discussions, Claudia Renz, Giovanni Balestrieri and Marie-France Dattler for their help in data acquisition, Dr Antoine Viola, Dr Christina Schmidt, Carolin Reichert, Micheline Maire, Virginie Gabel and Amandine Valomon for assisting in the recruitment, Dr Peter Blattner for assistance in the light settings and the volunteers for participating. This study was supported by the Swiss Federal Office for Public Health.
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Local EPrints ID: 479632
URI: http://eprints.soton.ac.uk/id/eprint/479632
ISSN: 0962-1105
PURE UUID: fd2b6522-624a-4fe5-905c-815bbcf573b7
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Date deposited: 26 Jul 2023 16:43
Last modified: 17 Mar 2024 04:20
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Author:
SL Chellappa
Author:
R Steiner
Author:
P Oelhafen
Author:
D Lang
Author:
T Götz
Author:
J Krebs
Author:
C Cajochen
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