natus BRM3, Справочное руководство

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Brainz BRM3 Brain Monitor Reference Manual |
3
Introduction
Impedance
The opposition to the flow of an electric current through a conductor
giving a measurement of the quality of contact between the electrode
and scalp, measured in kOhms.
Intensity
A measurement of the electrical energy present in the frequency band
of interest.
Neonatal Sensor Set
A proprietary, non-invasive, self-adhesive sensor array used to collect
EEG signals from a neonate’s brain.
Reference Electrode
An electrode used as a reference point for the suppression of
interfering signals detected by other electrodes or their cables.
Sagital Suture
A serrated line on the top of the skull that marks the junction of the
two parietal bones.
Sensor Adaptor Set
A proprietary sensor array for use with sub-dermal needle electrodes,
used to collect EEG signals from a neonate’s brain.
Spectral Edge Index (SEI)
The SEI is calculated by processing the signals from the patient’s brain
to obtain the frequency below which 90% of the EEG power
spectrum lies, across a signal bandwidth of 2 to 20 Hz.
Only EEG data not contaminated by noise, movement or other
problems is used in the calculation of SEI. SEI is also known as
Spectral Edge Frequency
.
Tragus The prominence in front of the external opening of the ear.
Symbols
The following table contains symbols and icons used on the BRM3 Brain Monitor and its packaging, or in
this manual and other documentation.
Symbol or Icon Meaning
Touchscreen Monitor is receiving power when lit
Direct Current
Type BF Equipment
Consult operating instructions
Attention: consult accompanying documents
PS/2 keyboard connector
US only: Caution: US Federal law restricts this device to sale by or on the
order of a physician.
Turn anti-clockwise to loosen and unlock the Roll Pole