The aim of this study is to investigate the physiological stress effects of light colour on white and coloured LED lighting in the elderly people. The laboratory experiment was conducted on 19 elderly subjects and analysed using heart rate variability. The results showed that the 2700 K and 6500 K conditions, which significantly decreased HR and significantly increased HF, were considered to...
The objective of this study is to find out if it is possible to achieve the circadian levels recommended by different published lighting guidelines using different color configurations in a text editor. By measuring 25 monitors of different sizes, the circadian impact is evaluated at a standard distance using two different parameters: Circadian Stimulus and Melanopic Equivalent Daylight...
This paper presents preliminary results of analyzes of the indoor environmental quality (IEQ) in a full scale rotatable 1:1 mockup of a patient room. As initial part of the planning of the indoor environment at a new mental hospital, the project seeks to uncover the natural differences and limitations of the building, caused by the geographical orientation. Examining the outdoor diurnal...
Prior to the installation of new integrative lighting systems, perceived experiences by nurses of the existing lighting were collected as a baseline study through interviews at two newly built hospital units in Denmark. This paper addresses the advantages and barriers that the current lighting application presents for the nurses’ work-practice. The study found that ten out of twelve of the...
The experience of light in a space and the physiological effect of light combined is complex to study. Methods which combine parameters from the fields of the biological, visual and atmospheric effects of light through a combination of both qualitative and quantitative data collection on site, seem more important than ever to validate the potentials of integrative lighting. A case study,...
