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Recommendations for measuring non-image-forming effects of light: A practical method to apply on cognitive impaired and unaffected participants
Eindhoven University of Technology, the Netherlands.
Eindhoven University of Technology, the Netherlands.
Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science. Jönköping University, School of Engineering, JTH. Research area Built Environment. Eindhoven University of Technology, the Netherlands.ORCID iD: 0000-0001-7520-1593
Erasmus Medical Center, the Netherlands.
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2017 (English)In: Technology and Health Care, ISSN 0928-7329, E-ISSN 1878-7401, Vol. 25, no 2, 171-186 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The non-image-forming effects of luminous radiation on people with intellectual disabilities or dementia received attention from researchers. Such studies, however, have generally been conducted using disparate methodologies which precludes generalization and reproducibility.

OBJECTIVE: The aim of this study was to determine the practical applicability of measurement devices for studies investigating non-image-forming effects of luminous radiation, specifically for people with intellectual disabilities or dementia.

METHODS: In three experiments, ten cognitive impaired people and thirty-nine unaffected subjects participated by wearing one or more portable devices. Six devices were assessed in total. Measurement data was accompanied with user experiences obtained from questionnaires, interviews and observations in order to assess the devices on practical and comfort issues.

RESULTS: On average, the devices worn by the cognitive impaired subjects were not experienced as annoying or irritating. No significant differences are found between genders and for one of the portable devices significantly less annoyance was reported by the cognitive impaired participants compared to the unaffected group of participants.

INNOVATIVE SOLUTION: The three phases of the research process in towards measuring personal luminous exposures are: selection of the most suitable portable device, application of the assessment method, and the application of the device in the (pilot) study.

CONCLUSIONS: However, the findings of this study suggest that inaccuracies potentially caused by practical and comfort issues associated with the portable devices need to be considered.

Place, publisher, year, edition, pages
IOS Press, 2017. Vol. 25, no 2, 171-186 p.
Keyword [en]
NIF, non-visual effects, intellectual disability, dementia, cognition, wearables, light measurements
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:hj:diva-34101DOI: 10.3233/THC-161258ISI: 000399456700001PubMedID: 27689558ScopusID: 2-s2.0-85017380692Local ID: JTHBebyggdISOAI: oai:DiVA.org:hj-34101DiVA: diva2:1050327
Available from: 2016-11-28 Created: 2016-11-28 Last updated: 2017-05-12Bibliographically approved

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