Journal article
Light sensors for objective light measurement in ambulatory polysomnography
R Schembri, J Spong, A Peters, P Rochford, P Wilksch, FJ O’Donoghue, KM Greenwood, M Barnes, GA Kennedy, DJ Berlowitz
Plos One | PUBLIC LIBRARY SCIENCE | Published : 2017
Abstract
Ambulatory polysomnography (PSG) does not commonly include an objective measure of light to determine the time of lights off (Loff), and thus cannot be used to calculate important indices such as sleep onset latency and sleep efficiency. This study examined the technical specifications and appropriateness of a prototype light sensor (LS) for use in ambulatory Compumedics Somte PSG.Two studies were conducted. The first examined the light measurement characteristics of the LS when used with a portable PSG device, specifically recording trace range, linearity, sensitivity, and stability. This involved the LS being exposed to varying incandescent and fluorescent light levels in a light controlle..
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Grants
Awarded by National Health and Medical Research Council
Funding Acknowledgements
This study was supported by National Health and Medical Research Council postgraduate stipend (Rachel Schembri, #616605) and project grant (#1080020 to David J Berlowitr); The COSAQ study is proudly supported by the Transport Accident Commission, Victoria, Australia. This study was led from the Institute for Breathing and Sleep with data collection undertaken across multiple sites. The technical sensor testing was performed at the Institute for Breathing and Sleep, and RMIT University. Overnight polysomnography was performed in participants' homes, or in hospital beds of the centres participating in the COSAQ study.