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. 2012:2012:2263-6.
doi: 10.1109/EMBC.2012.6346413.

A Gaussian model for movement detection during sleep

Adriana M Adami  1 , André G Adami, Tamara L Hayes, Misha Pavel, Zachary T Beattie
Affiliations

A Gaussian model for movement detection during sleep

Adriana M Adami et al. Annu Int Conf IEEE Eng Med Biol Soc. 2012.

Abstract

Quality of sleep is an important attribute of an individual's health state and its assessment is therefore a useful diagnostic feature. Changes in the patterns of mobility in bed during sleep can be a disease marker or can reflect various abnormal physiological and neurological conditions. This paper describes a method for detection of movement in bed that is evaluated on data collected from patients admitted for regular polysomnography. The system is based on load cells installed at the supports of a bed. Since the load cell signal varies the most during movement, the approach uses a weighted combination of the short-term mean-square differences of each load cell signal to capture the variations in the signal caused by movement. We use a single univariate Gaussian model to represent each class: movement versus non-movement. We assess the performance of the method against manual annotation performed by a sleep clinic technician from seventeen patients. The proposed detection method achieved an overall sensitivity of 97.9% and specificity of 98.7%.

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Figures

Figure. 1
Figure. 1
Movement Detection Framework.
Figure 2
Figure 2
Class density distribution of the features.
Figure 3
Figure 3
Performance measurements for each subject.
See this image and copyright information in PMC

References

    1. Walters AS. Toward a Better Definition of the Restless Legs Syndrome. Movement Disorders. 1995;10:634–642. - PubMed
    1. Culebras A. Who Should be Tested in the Sleep Laboratory? Reviews in Neurological Diseases. 2004;1:124–132. - PubMed
    1. Gorny S, Allen RP, Krausman DT, Earley CJ. Evaluation of the PAM-RL System for the Detection of Periodic Leg Movements during Sleep in the Lab and Home Environments. Sleep. 1998;Suppl 21:183.
    1. King MA, Jaffre M-O, Morrish E, Shneerson JM, Smith IE. The Validation of a New Actigraphy System for the Measurement of Period Leg Movements in Sleep. Sleep Medicine. 2005;6:507–513. - PubMed
    1. Prill T, Fahrenberg J. Simultaneous Assessment of Posture and Limb Movements (e.g., periodic leg movements) with Calibrated Multiple Accelerometry. Physiological Measurements. 2006:N47–N53. - PubMed

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