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Irish Child Health Database - Peer Reviewed Papers

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You are here: Irish Child Health Database » Study Papers » Descriptive Studies - Studies with a health technology dimension » A study of sensitivity and specificity of a measurement tool
  • An evaluation of a non-contact biomotion sensor with actimetry

    Published in:

    Conf Proc IEEE Eng Med Biol Soc, Vol: 2007, Page: 2664-8

    Publication Date:

    2007

    Aims & Objectives:

    This study investigates a very sensitive non-contact biomotion sensor to measure actimetry and compare its performance to wrist-actimetry

    Abstract:

    Actimetry is a widely accepted technology for the diagnosis and monitoring of sleep disorders such as insomnia, circadian sleep/wake disturbance, and periodic leg movement. In this study we investigate a very sensitive non-contact biomotion sensor to measure actimetry and compare its performance to wrist-actimetry. A data corpus consisting of twenty subjects (ten normals, ten with sleep disorders) was collected in the unconstrained home environment with simultaneous non-contact sensor and ActiWatch actimetry recordings. The aggregated length of the data is 151 hours. The non-contact sensor signal was mapped to actimetry using 30 second epochs and the level of agreement with the ActiWatch actimetry determined. Across all twenty subjects, the sensitivity and specificity was 79% and 75% respectively. In addition, it was shown that the non-contact sensor can also measure breathing and breathing modulations. The results of this study indicate that the non-contact sensor may be a highly convenient alternative to wrist-actimetry as a diagnosis and screening tool for sleep studies. Furthermore, as the non-contact sensor measures breathing modulations, it can additionally be used to screen for respiratory disturbances in sleep caused by sleep apnea and COPD.

    Authors:

    N. A. Fox; C. Heneghan; M. Gonzalez; R. B. Shouldice; P. de Chazal

    Study Type:

    Study Papers » A study of sensitivity and specificity of a measurement tool » Descriptive Studies - Studies with a health technology dimension

    Categories:

    non-contact biomotion sensor; actimetry (gross motor function); wrist-actimetry

    International Classification:

    Diagnostic tool (biomotion sensor) - wrist-actimetry

    Keywords:


    Geography:

    International (Ireland & Spain)