¿qué impacto tiene exponernos a la luz artificial sobre
Post on 06-Jul-2022
3 Views
Preview:
TRANSCRIPT
¿Qué impacto tiene exponernos a la luz artificial sobre nuestra fisiología y estado psicológico?
SEPEX, SEPNECA and AIP experimental Conference. Madrid, 4 July 2018
Ángel Correa Beatriz Rodríguez-Morilla
Antonio Barba Francisca Padilla
Juan Antonio Madrid (UMU)
2
• Natural light/darkness cycle entrains our circadian rhythms (sleep/wake)
• However, we increasingly expend more time indoors (daylight -> electrical light)
• Impact on health?
THE PANACEA:Improved Visual AcuityReduced FatigueFewer Dental CariesAccelerated MaturationImproved Neural FunctioningReduced Seasonal DepressionReduced BulimiaReduced HyperactivityGreater School AchievementImproved AttendanceGreater AttentivenessImproved Mood
1973Full spectrum fluorescent lamps = health
THE PANACEA:Improved Visual AcuityReduced FatigueFewer Dental CariesAccelerated MaturationImproved Neural FunctioningReduced Seasonal DepressionReduced BulimiaReduced HyperactivityGreater School AchievementImproved AttendanceGreater AttentivenessImproved Mood
1973Only a full spectrum of natural light could promote full health
in plants, animals, and humans 1986
“Health Fraud Notice”: absence of sound scientific evidence in support of the health claims made in the lamp’s labelling
5
Night shift work = probable carcinogen (circadian disruption; WHO).
Artificial light at night, circadian disruption and breast and prostate cancers
2007
2018
New photoreceptor (ipRGC): “blue” wavelength light resets the circadian clock (Berson et al., 2002)2002
Nobel Prize in Physics for the invention of the blue LED2014
2005Blue light at night boosts alertness (melatonin, thermophysiology, heart rate; Cajochen et al., 2005)
full spectrum -> blue light
6
Night shift work = probable carcinogen (circadian disruption; WHO).
Artificial light at night, circadian disruption and breast and prostate cancers
2007
2018
New photoreceptor (ipRGC): “blue” wavelength light resets the circadian clock (Berson et al., 2002)2002
Nobel Prize in Physics for the invention of the blue LED2014
2005Blue light at night boosts alertness (melatonin, thermophysiology, heart rate; Cajochen et al., 2005)
Neurocognitive effects of light1. Beyond alertness 2. Ecological conditions
Subjective Physiological Behavioural
Sleepiness (KSS)
Mood (VAS, PANAS)
Mental effort
Visual confort
Distal temperature Proximal
Distal-Proximal Gradient (DPG)Vigilance Tasks
(PVT, Driving, SART)
Reaction time
Accuracy
Inhibitory control
Subjective Physiological Behavioural
Sleepiness (KSS)
Mood (VAS, PANAS)
Mental effort
Visual confort
Distal temperature Proximal
Distal-Proximal Gradient (DPG)
PVT, Driving, SART
Reaction time
Accuracy
Inhibitory control
Pre-test ADAPTATION TO LIGHT TASK Post-test
10 min 10 min20 min 20 - 60 min
10
Study N Design Task
1 Rodriguez-Morilla et al. 2017 36
Blue Dim
OrangeSimulated Driving
2 Rodriguez-Morilla et al. 2018 17 Blue vs. Dim (within) Simulated Driving
3 Barba et al. 15Blue Dim
OrangeSART
4 Correa et al. 2016 24 Blue vs. Dim (within) SART
5 Barba et al. 45 Blue vs. Dim (within) PVT
11
12
• no effects on subjective somnolence or mood • enhanced arousal (lower temperature gradient) • facilitated fast responding, but… • … impaired driving accuracy
Blue-enriched white light
Differential effects as a function of specific task demands?
13
50 ms
1150 ms or until response Error
No-go
Error
Go
Go
No-go
1200
ms 3
3"
2"
7"Condition Index Process
GO RT automatic
NOGO accuracy controlled
Sustained Attention to Response Task (SART)
Robertson et al, 1997
14
Condition Index Process
GO RT automatic
NOGO accuracy controlled
f a s t e r ‘ a u t o m a t i c ’ responding (go trials) no effect on inhibitory control
15
Study N Somno-lence Mood Arousal
(DPG)Response
speedTask
accuracy
Rodriguez-Morilla et al. 2017
36 x xRodriguez-Morilla et al. 2018
17 x xBarba et
al. 15 x x x xCorrea et al. 2016 24 x x xBarba et
al. 45 x x
16
Study N Somno-lence Mood Arousal
(DPG)Response
speedTask
accuracy
Rodriguez-Morilla et al. 2017
36 x xRodriguez-Morilla et al. 2018
17 x xBarba et
al. 15 x x x xCorrea et al. 2016 24 x x xBarba et
al. 45 x x
Rightskewedp-curve=presenceofeviden6alvalue
p-curvedoesnotindicateeviden/alvalue
Lighting effects on Reaction Time
¿Qué impacto tiene exponernos a la luz artificial sobre nuestra fisiología y estado psicológico?
En nuestras condiciones de iluminación (sur de España), en muestras de adultos jóvenes sin trastornos
circadianos ni del sueño,
la exposición aguda a la luz enriquecida en azul no tiene un impacto claro sobre la ejecución de tareas
cognitivas, ni sobre la fisiología circadiana, ni sobre el estado de ánimo.
Ángel Correa Beatriz Rodríguez-Morilla, Antonio Barba,
Francisca Padilla y Juan Antonio Madrid (UMU)
¿Qué impacto tiene exponernos a la luz artificial sobre nuestra
fisiología y estado psicológico?
SEPEX, SEPNECA and AIP experimental Conference. Madrid, 4 July 2018
top related