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Theory and application of a data-driven approach to compressive spectrometry in the assessment of neurophotic stimulation

Publications associées (37)

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Bright Light Delights: Effects of Daily Light Exposure on Emotions, Rest-activity Cycles, Sleep and Melatonin Secretion in Severely Demented Patients

Jean-Louis Scartezzini

Objective: We tested whether the effects of a dynamic lighting system are superior to conventional lighting on emotions, agitation behaviour, quality of life, melatonin secretion and circadian restactivity cycles in severely demented patients. As a compari ...

Bentham Science Publ Ltd2017

Lighting control system

Jean-Louis Scartezzini, Laurent Deschamps, Ali Motamed

In a control unit (8) for a lighting control system, wherein the control unit (8) is configured to calculate output values based on input values and the output values include control commands for a lighting installation (4, 6, 7.1, 7.2), the input values i ...

2017

High light intensity mediates a shift from allochthonous to autochthonous carbon use in phototrophic stream biofilms

Tom Ian Battin, Amber Joy Ulseth

Changes in the riparian vegetation along stream channels, diurnal light availability, and longitudinal fluctuations in the local light regime in streams influence primary production and carbon (C) cycling in benthic stream biofilms. To investigate the infl ...

Amer Geophysical Union2017

On the Impact of Integration of Non-Image Forming (NIF) Effect of Light on Electrical Lighting Control in Non-Residential Buildings

Jean-Louis Scartezzini, Ali Motamed, Marta Benedetti

Lighting has an impact on the visual as well as cognitive performance of people in non-residential buildings. Light is the most powerful time cue for resetting the circadian pacemaker and ensuring correct synchronization of the internal clock with the envi ...

2016

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Circadian rhythms in physiology and behavior are modulated by external factors such as light or temperature. We studied whether self-selected office lighting during the habitual waking period had a different impact on alertness, cognitive performance and h ...

Nature Publishing Group2016

Implications of the interplay between light and dark for human health in the built environment

Marilyne Andersen, María Lovísa Ámundadóttir

24-hour cycles of light and dark are one of the most significant factors in the built environment that affect human health and wellbeing. In addition to stimulating visual responses, light induces a range of circadian, physiological and behavioral response ...

2015

Today, the challenges of sustainable development require revisiting all the parameters of architectural design. According to the International Energy Agency , in 2005, 19% of the electricity produced in the world was consumed for lighting. We know that the ...

2014

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Suboptimal light distribution in a room can cause visual discomfort and glare. Next to rods and cones, perception of light is also governed by a third class of photoreceptors, important for circadian rhythm regulation and non-visual functions such as alert ...

EPFL Solar Energy and Building Physics Laboratory (LESO-PB)2013

Integrating non-visual effects of light into lighting simulation: challenges ahead

Marilyne Andersen, María Lovísa Ámundadóttir, Steven W. Lockley

Lighting is a major influential factor that affects human health and sense of wellbeing in the built environment. Since 2002, when the first reports on the discovery of a novel type of photoreceptor were published, a new field of study started to emerge at ...

2013

Visual comfort at workplaces has often been considered in terms of discomfort glare, luminance distribution and task visibility. Besides visual effects, the lighting environment has also impact on human physiology and behaviour. These effects of light are ...

EPFL2013