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A TECHNIQUE FOR MEASURING THE SLEEP QUALITY USING LOAD SENSORS

IP.com Disclosure Number: IPCOM000190286D
Publication Date: 2009-Nov-23
Document File: 8 page(s) / 71K

Publishing Venue

The IP.com Prior Art Database

Abstract

A technique for measuring the sleep quality using load sensors is disclosed. The sleep quality is an important indicator of depression, fall risk, all-cause mortality, obesity and many other health conditions. The load sensors measure changes in positions during sleep. The load sensors may utilize various digital circuitries, such as a low pass filter and/or a high pass filter for calculating change in positions. The load sensors utilize a high-pass filter to determine movements or very brief wake bouts in sleep cycle of a person. The length and fragmentation of different sleep stages yield a better measure of sleep quality.

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RP13131

A TECHNIQUE FOR MEASURING THE SLEEP QUALITY USING LOAD SENSORS

BRIEF ABSTRACT

    A technique for measuring the sleep quality using load sensors is disclosed. The sleep quality is an important indicator of depression, fall risk, all-cause mortality, obesity and many other health conditions. The load sensors measure changes in positions during sleep. The load sensors may utilize various digital circuitries, such as a low pass filter and/or a high pass filter for calculating change in positions. The load sensors utilize a high-pass filter to determine movements or very brief wake bouts in sleep cycle of a person. The length and fragmentation of different sleep stages yield a better measure of sleep quality.

KEYWORDS

Sleep, load cells, load sensor(s), filter, low-pass filter, high-pass filter, health, person, bed, sensor, graphs, Actigraphy, polysomnography, PSG, measure, determine, movement, position.

DETAILED DESCRIPTION

    A quality sleep is very important for a person as any significant sleep deficits and disorders reflect health state of that person. Disrupted sleep is a common problem in the elders, due to age-related changes in health, lifestyle and the physiological aspects. Due to multiple factors including the inability to get sufficient sleep, circadian rhythm changes, sleep disorders, illness, medication use and poor sleep habits. Early detection of sleep related irregularities can be useful in providing timely intervention to enable changes in lifestyle, habits and appropriate medication. Generally, an assessment of sleep behavior is one of the steps followed by doctors during evaluation of sleep complaints.

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RP13131

    There exist various conventional techniques for measuring sleep quality. Polysomnography (PSG) techniques monitor physiological activities (e.g., electrical brain activity, eye movements, and respiratory system) during sleep and such techniques typically take place in a sleep lab. The PSG techniques are able to measure various objective sleep parameters, such as total sleep time, sleep efficiency i.e.% of total time in bed that is actually spent in sleeping and the duration of different sleep stages including Rapid Eye Movement (REM) sleep. The PSG techniques are considered to be a gold standard for sleep measurement. However, the PSG techniques prove to be costly in terms of instrument setup, requirement of trained technicians and many more. As such, the PSG techniques are Lab based, so participants or patients require sleeping in unfamiliar environments with resistive sensors, weight sensors, air pressure sensors, and the like attached to their bodies, for generating data with suspect ecological validity.

    In addition, another conventional technique known as actigraphy, is also used for measuring sleep quality. The actigraphy technique utilizes an actigraph, a smal...