Table of Contents
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Introduction
Description
The Zmachine is a high technology sleep monitor, developed by General Sleep Corporation,
which uses state-of-the-art electroencephalography (EEG) hardware in combination with
advanced signal processing algorithms to detect sleep stages, including Wake, Light Sleep, Deep
Sleep and REM. The Zmachine was designed for use in the clinical or home environment. The
Zmachine gathers high quality, objective, epoch-by-epoch, sleep state information and summary
sleep statistics, all of which can be reviewed by a clinician either independently, or in the
presence of their patient.
The Zmachine acquires the EEG signal necessary for sleep monitoring using three high quality,
self-stick, single-use, disposable EEG sensors. The three sensors are designed for easy, self-
application by the patient with minimal skin preparation (alcohol wipe and dry). The sensors are
located completely outside of the hairline on the mastoids (signal) and the back of the neck
(ground). Integrated impedance measurement technology verifies the quality of the sensor
connections immediately prior to the start of monitoring and at periodic intervals during use.
Indications for Use
The Zmachine is a single-channel, EEG acquisition and analysis system, designed for use in the
home or clinical environments. This device is intended to be used by qualified healthcare
practitioners to monitor the wake and sleep states of adult patients and as an adjunct to their
diagnosis of sleep disorders.
Introduction
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