DEVICE: Compumedics Grael (09342451001276)

An electrically-powered device designed for noninvasive recording of the electrical activity of the brain for display in the form of a graph [electroencephalogram (EEG)], typically to study a variety of neurological conditions, evaluate psychiatric disorders, and/or assist in localizing tumours or lesions on or near the surface of the brain. It is designed to acquire electrical signals from electrodes typically attached to the scalp and ear lobes. The results may be displayed via print-out or electronically; data interpretation and/or telemetry features may also be included.

A mains electricity (AC-powered) device designed to record physiological signals from a sleeping patient to assess sleep disorders (e.g., insomnia, snoring or sleep apnoea). The device is typically computerized and usually records an electrocardiogram (ECG), electroencephalogram (EEG), chest wall motion, airflow at both the nose and the mouth, eye movements, haemoglobin oxygen saturation (SpO2) and electromyogram (EMG). Parameters may be added or omitted depending on the study being performed. The device includes multiple electrodes/sensors placed on the patient in specific areas as well as amplifiers and filters for recording.