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Brainz BRM3 Brain Monitor Reference Manual |
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Introduction
Conventions used in this document
Warnings, cautions and notes
A WARNING identifies actions or situations that could lead to personal injury or death.
Take note of all WARNINGS before you operate the BRM3 Brain Monitor.
A CAUTION identifies actions or situations that could damage the BRM3 Brain Monitor, or other
equipment, or invalidate test results and measurements. Personal injury is unlikely.
A NOTE contains advisory information about some aspect of the BRM3 Brain Monitor or its operation, or
about a procedure or function.
Terms and abbreviations
The following table contains the terms and abbreviations used on the BRM3 Brain Monitor and its
packaging, or in this manual and other documentation.
Term or Abbreviation Meaning
Amplitude-integrated
electroencephalograph (aEEG)
A time-compression technique for presenting long EEG recordings,
using an asymmetrical filter, peak detector, rectifier and semi-
logarithmic amplifier.
Amplitude
A measurement of the level of brain activity detected as an electrical
signal, measured in microvolts (
μ V) peak-to-peak.
Artifact
Any electrical signal detected by an EEG machine from an extra-
cerebral source (for example, electrode or cable movement, AC supply
noise, ventilator noise).
Assessment
In this document, the term ‘assessment’ refers to an examination of a
patient’s EEG activity using the BRM3 Brain Monitor.
Channel
A complete system for the amplification and conditioning of electrical
signals from a pair or combination of electrodes.
Data Acquisition Unit (DAU)
The DAU contains the interface between the low-level analog signals
detected by the Neonatal Sensor Set or Sensor Adaptor Set and the
digital processing software of the BRM3 Brain Monitor. The DAU also
contains the medical isolation circuitry used to protect both patient
and instrument in the unlikely event of an electrical fault. The DAU is
normally positioned close to the patient, often hung at the side of an
incubator or cot.
Electrode
Conductor applied over, or inserted into, a region of the scalp to
detect electrical activity of the brain.
Electroencephalograph (EEG)
Medical electrical equipment intended for production of graphic
recordings and/or a visual display of electrical activity of the brain.
Electromyography (EMG) Electrical activity associated with muscle movement.
Frequency
The number of complete cycles of repetitive waves in one second,
measured in hertz (Hz).