Next Generation SedLine®
Brain Function Monitor

More Complete Data, Now With An Enhanced Patient State Index (PSi)



Next Generation SedLine features:

  • > An enhanced processed EEG index (PSi) with:
    • Less susceptibility to EMG interference
    • Improved performance in low power EEG cases
  • > Optional Multitaper Density Spectral Array (DSA), which may improve visibility of EEG features

Reducing Electromyography (EMG) Susceptibility

Next Generation SedLine utilises Masimo’s Parallel Signal Processing Engines to extract a clearer EEG signal and compute a processed EEG parameter (PSi) less influenced by EMG.

EMG can interfere with EEG signals used in brain function monitoring. Researchers have found that EMG interference existed in up to 38% of monitored patients.1



Improved PSi Performance in Low Power EEG

Power across all frequency bands decreases with age. Low power can present a challenge for conventional brain function monitors.2

low power EEG

The subjects above were administered Propofol and were in a comparable anaesthetic state.3

Next Generation PSi uses adaptive signal processing with band-independent features to offer improved PSi performance in cases of low power EEG.


Next Generation PSi Searches For EEG Features Across Many Frequency Bands


Optional Multitaper Density Spectral Array (DSA)

  • > Next Generation SedLine has the option to display a standard Hanning DSA or a Multitaper DSA, based upon clinical preference
  • > When using Multitaper DSA, EEG data are transformed into the frequency domain, which may provide a better display of EEG features



The SedLine EEG Sensor

  • > Four active EEG leads collect data from the frontal lobe
  • > Soft foam pads improve patient comfort
  • > Allows simultaneous application of SedLine and O3® Regional Oximetry sensors
sedline sensor


  • 1 Narasway et al. Critical Care Med. 2002 Jul;30(7):1483-7.
  • 2 Purdon P L et al. British Journal of Anaesthesia. 10.1093 46-57.
  • 3 Masimo Data on File.


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Next Generation SedLine
Brain Function Monitor
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Next Generation SedLine has obtained CE Marking. Not available in the U.S. or Canada.

For professional use. See instructions for use for full prescribing information, including indications, contraindications, warnings, and precautions.