Physiological monitoring
First Claim
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1. Insomnia monitoring apparatus comprising:
- one or more electrodes to obtain an electro-oculogram (EOG) signal from a subject over a period of epochs, the signal being related to the sleep stage type being experienced by the subject; and
a processor adapted to analyse the electro-oculogram signal and assign a sleep stage type to each epoch based on the electro-oculogram signal.
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Abstract
Sleep or vigilance analysis is performed by use of a trained artificial neural network on electro-oculogram signals. Either a left side or right side EOG signal may be used, referenced to the nearby mastoid site, the nape of the neck or another quiet site. The use of the EOG signal allows REM sleep to be distinguished from light sleep. The use of only one channel of data means that only a small number of electrodes need to be used and thus the device can be provided as a self-contained compact portable unit. The device may also provide a sleep stage type sensitive alarm clock.
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Citations
29 Claims
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1. Insomnia monitoring apparatus comprising:
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one or more electrodes to obtain an electro-oculogram (EOG) signal from a subject over a period of epochs, the signal being related to the sleep stage type being experienced by the subject; and
a processor adapted to analyse the electro-oculogram signal and assign a sleep stage type to each epoch based on the electro-oculogram signal. - View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 25, 26, 27, 28, 29)
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3. Vigilance monitoring apparatus comprising:
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one or more electrodes to obtain an electro-oculogram (EOG) signal from a subject over a period of epochs, the signal being related to the wakefulness stage type being experienced by the subject; and
a processor adapted to analyse the electro-oculogram signal and assign a wakefulness stage type to each epoch based on the electro-oculogram signal. - View Dependent Claims (4)
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14. A method of sleep or vigilance monitoring, characterised by:
- obtaining at least one electro-oculogram (EOG) signal from a subject and performing sleep or vigilance analysis on the at least one EOG signal.
- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
Specification