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Development of a continuous multisite accelerometry system for studying movements during sleep

机译:开发用于研究睡眠期间运动的连续多部位加速度计系统

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Actigraphy has proven to be a useful tool in the assessment of circadian rhythms, and more recently in the automatic staging of sleep and wake states. Whilst accuracy of commercial systems appears good over 24 hour periods, the sensitivity of detecting wake during time in bed is poor. One possible explanation for these poor results is the technical limitations of currently available commercial actigraphs. In particular, raw data is generally not available to the user. Instead, activity counts for each epoch (typically between 10–60secs) are calculated using various algorithms, from which sleep state is identified. Consequently morphologically different movements observed during sleep and wake states may not be detected as such. In this paper, the development of a continuous multisite, accelerometry system (CMAS) is described. Initial results, comparing data collected using a commercial actigraph (Actiwatch- Mini Motionlogger), and the continuous multisite accelerometry system are presented. The CMAS is able to differentiate brief movement “twitches” from postural changes.
机译:事实证明,书法是评估昼夜节律的有用工具,最近在睡眠和唤醒状态的自动分期中也是如此。尽管商用系统在24小时内显示出良好的准确性,但是在床上时间检测唤醒的敏感性却很差。这些不良结果的一种可能解释是当前可用的商业书法作品的技术局限性。特别是,原始数据通常对用户不可用。取而代之的是,使用各种算法来计算每个时期(通常在10-60秒之间)的活动计数,从中可以识别出睡眠状态。因此,可能无法检测到在睡眠和唤醒状态期间观察到的形态上不同的运动。在本文中,描述了一种连续的多站点加速度测量系统(CMAS)的开发。提出了初步结果,比较了使用商业活动记录仪(Actiwatch- Mini Motionlogger)和连续多站点加速度计系统收集的数据。 CMAS能够区分短暂的运动“抽搐”与姿势变化。

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