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Sleep & EEG Core (BWH)

Director: Aeschbach, Daniel, Ph.D.

Location: Brigham & Women’s Hospital Boston Lying-In, 221 Longwood Ave., Boston, MA, 02115 USA

Summary:

The Sleep & EEG Core within the Division of Sleep Medicine (DSM) provides an integrated infrastructure and knowledge base in support of research projects that use polysomnography (PSG), quantitative EEG analysis and related methodologies. The Core consists of a team of specialists lead by the Core director and a chief PSG technologist.

The Core provides support and services in different areas:
1) It provides basic training and certification in PSG and EEG instrumentation to technicians and investigators, particularly those conducting studies at the Center for Clinical Investigation (CCI) at Brigham and Women’s Hospital.
2) It acts as liaison between DSM investigators and CCI technical staff, and implements and monitors quality assurance measures.
3) It carries out standard vigilance state scoring of PSG recordings and different types of waking EEG and electrooculogram analyses.
4) It carries out spectral analysis of sleep and waking EEG.
5) It evaluates, acquires, and maintains PSG and EEG equipment used by investigators of the CCI.
6) It carries out PSG procedures such as sleep screens and multiple sleep latency tests.
7) It assists investigators in the analysis and interpretation of sleep and EEG data.

Over the years, the Sleep & EEG Core has been a central part of many projects funded by NIH, the Air Force Office of Scientific Research (AFOSR), and the National Space Biomedical Research Institute (NSBRI) that had a main focus on the physiology of human sleep-wake regulation. Scientifically, the Core has contributed by providing investigators with important quantitative measures of homeostatic and circadian components of the human sleep-wake regulatory system.

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Instruments

  • Vitaport 2 recorders (8 available) ( Digital sleep recorder )

    These 24-channel ambulatory digital sleep recorders consist of three separate modules. The universal module allows the user to select 8 different signals, such as EEG, light, and temperature for collection and storage. The polysomnography module is a 16-channel ‘slice’ that is dedicated to recording respiratory functions, sound, light, ECG, and EEG. The final slice is a digital to analog slice that allows the user to select 8 of the 24 recording channels for analog conversion in order to use with peripheral devices.
    Facility has 8 recorders. The Vitaport system is a portable PSG system that can be used for ambulatory in-home recordings as well as for high-quality recordings in the controlled environment of a sleep laboratory. The unit has impressive physical stability, as verified and certified during extensive vibration and thermal cycle tolerance testing procedures conducted by NASA. The reliability is much higher than that of other PSG recording systems we have used in the past.

  • Vitaport 3 recorders (10 available) ( Digital sleep recorder )

    The Vitaport system is a portable PSG system that can be used for ambulatory in-home recordings as well as for high-quality recordings in the controlled environment of a sleep laboratory. The unit has impressive physical stability, as verified and certified during extensive vibration and thermal cycle tolerance testing procedures conducted by NASA. The reliability is much higher than that of other PSG recording systems we have used in the past.

    Data collected with the Vitaport-3 DSR are stored initially to flash-RAM cards. Once collected, the data is then transferred onto a workstation for visual inspection and data integrity/quality checks. Next, the data is archived in quadruplicates on mass storage drives/tapes. Finally, the data is uploaded to a PSG scoring workstation for data processing and analysis. These 32-channel ambulatory digital sleep recorders consist of two separate modules. The polysomnography module is a 16-channel ‘slice’ that is dedicated for recording cardiorespiratory functions including sound, light, effort, ECG, and EEG. The EEG module is a 16-channel module that is dedicated to EEG recording using either monopolar or bipolar recording.
    Facility has 10 recorders.

  • Vitaport 3 recorders with 8-channel Universal 'slice' (5 available) ( Digital sleep recorder )

    These 32-channel ambulatory digital sleep recorders consist of two separate modules. The polysomnography module is a 16-channel ‘slice’ that is dedicated for recording cardiorespiratory functions including sound, light, effort, ECG, and an 8-channel Universal ‘slice’ .
    Facility has 5 recorders. The Vitaport system is a portable PSG system that can be used for ambulatory in-home recordings as well as for high-quality recordings in the controlled environment of a sleep laboratory. The unit has impressive physical stability, as verified and certified during extensive vibration and thermal cycle tolerance testing procedures conducted by NASA. The reliability is much higher than that of other PSG recording systems we have used in the past.

    Data collected with the Vitaport-3 DSR are stored initially to flash-RAM cards. Once collected, the data is then transferred onto a workstation for visual inspection and data integrity/quality checks. Next, the data is archived in quadruplicates on mass storage drives/tapes. Finally, the data is uploaded to a PSG scoring workstation for data processing and analysis.

  • Vitaport 3 recorders with a 16-channel EEG and 8 channel Module (6 available) ( Digital sleep recorder )

    Ambulatory digital sleep recorders featuring a 16-channel EEG and 8 channel Module. Facility has 6 recorders. The Vitaport system is a portable PSG system that can be used for ambulatory in-home recordings as well as for high-quality recordings in the controlled environment of a sleep laboratory. The unit has impressive physical stability, as verified and certified during extensive vibration and thermal cycle tolerance testing procedures conducted by NASA. The reliability is much higher than that of other PSG recording systems we have used in the past.

    Data collected with the Vitaport-3 DSR are stored initially to flash-RAM cards. Once collected, the data is then transferred onto a workstation for visual inspection and data integrity/quality checks. Next, the data is archived in quadruplicates on mass storage drives/tapes. Finally, the data is uploaded to a PSG scoring workstation for data processing and analysis.

Services

  • PSG Data Archiving ( Data storage service )

    Archiving a PSG recording (per scheduled PSD download of any length)

  • PSG Data Processing and Analysis Support ( Support service )

    * Vigilance state scoring of a sleep recording
    * Conducting sleep EEG spectral analysis
    * Vigilance state scoring of a wake recording
    * Visual scoring of slow eye movements (SEM) in a wake recording
    * Analysis of Karolinska drowsiness test (KDT)
    * Sleep screen scoring

  • PSG Procedures ( Support service )

    * Conducting and evaluating overnight sleep screens
    * Conducting and evaluating multiple sleep latency tests (MSLT)
    * Conducting and evaluating maintenance of wakefulness tests

  • PSG Training to Staff ( Training service )

    * Training and certification of investigator-hired staff in PSG instrumentation and operation of PSG equipment
    * Training and certification of investigator-hired staff in vigilance state scoring of PSG recordings
    * Training and certification of investigator-hired staff in scoring of PSG derived slow eye movements (SEM)
    * Training and certification of investigator-hired staff in conducting and evaluating multiple sleep latency tests (MSLT) or maintenance of wakefulness tests (MWT)


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Last updated: 2013-02-27T12:25:31.977-06:00

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