BrainVision Recorder
Easy-to-use
multifunctional
recording software
BrainVision RecView
Software for realtime data analysis
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Contents
BrainVision Recorder
•
Easy-to-use multifunctional recording software
•
New Features of the BrainVision Recorder
> Online Average Overlay
> Default Display Interval
> Channel Selection
> Detection of Expired Dongles
> Selection of a Virtual Amplifier
> Impedance Measurement for Reference and Ground Electrodes
> Interface to the actiCAP ControlSoftware
BrainVision RecView
•
Software for real-time data analysis
•
New Features of BrainVision RecView
>
>
>
>
>
>
>
Bridge Tool
Linear Derivation
Level Trigger
Band Power Trigger
R-Peak Trigger
Average Filter
FFT
Technical Specifications: BrainVision Recorder / BrainVision RecView
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BrainVision Recorder:
Easy-to-use multifunctional recording software
The BrainVision Recorder is a powerful and flexible recording program. Its internal structure allows you to work with an
unlimited number of channels. OLE Automation allows you to control the BrainVision Recorder remotely and monitor its internal
status using other programs.
The Remote Data Access (RDA) method allows you to acquire and record the digital signals with their own programs while the
data is being displayed. This method can be used across different computers. Possible applications for RDA include biofeedback
and signal quality analysis.
Separate software filters that can be freely set on the level of single channels are available to you for displaying and storing
continuous, segmented and averaged data. The optional video function allows you to
record video data synchronously with your EEG data.
The optional averaging function on the basis of event markers allows evoked
potentials to be displayed during recording. The Static Overlay Function allows you to
compare current averaged data with, for instance, a prototypical curve that you have
recorded previously with the BrainVision Recorder or calculated with the Analyzer.
The Recorder has an Interface to the actiCAP ControlSoftware (Version 1.2.1.0 and
higher) to allow impedance measurement of active electrodes. If you control the
actiCAP ControlSoftware using the Recorder, you can automatically save the
impedance values in the header file of the EEG data set, which obviates the
need to save them in a separate file.
Online Average Overlay Function
The BrainVision Recorder allows you to store settings for the trigger output, the
SyncBox and the test signal in the workspace and to load them automatically
with the workspace. If you are using an amplifier of the BrainVision BrainAmp
family, the value range that can be displayed for the impedances of the
ground electrode and the reference electrode is 0 kOhm to 100 kOhm.
Static Overlay Function
You can select individual channels or multiple channels when viewing data
(monitoring) in the BrainVision Recorder and display these separately. The Virtual Amplifier Function
you to create and edit workspaces for your BrainAmp amplifier without the need to connect it to your computer.
allows
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New Features of the BrainVision Recorder
Online Average Overlay
Previous versions of the Recorder already allowed you to
segment and average data in parallel with data acquisition.
This made it possible to ascertain directly whether a visible
evoked potential was formed during signal acquisition.
Now, this supplementary feature allows you to add a static
overlay of a previously recorded average to the average view
and thus compare the ongoing wave with a prototypical one.
This feature is available from the workspace setup wizards.
Default Display Interval
You can select the length of the time interval to be displayed
by default on the computer screen (in the “Preferences“ dialog
box).
Channel Selection
In the same way as with the BrainVision
Analyzer, you can select a subset of
channels during monitoring.
Trigger port, SyncBox, and test signal
settings are saved in the workspace and are
loaded automatically with the workspace.
Channel selection
Detection of Expired Dongles
You now receive more comprehensive
information on the connected HASP-HL dongle. Moreover,
a warning is issued if a dongle has already expired
or if a dongle is due to expire in less than 30 days.
Selection of a Virtual
Amplifier
This
function
allows
BrainAmp users to create
new workspaces, even if
Selection Virtual Amplifier
no amplifiers are actually
connected.
You
simply
select the virtual amplifier(s) you need and adjust the
amplifier settings in the same way as for a real workspace.
Impedance Measurement for Reference and Ground Electrodes
BrainAmp users can scale the displayed range of
impedance values for reference and ground electrodes
between 0 to 100 kOhm.
Interface to the actiCAP
ControlSoftware
We have implemented the
impedance view from the
actiCAP
ControlSoftware
(version 1.2.1.0 or higher)
in our BrainVision Recorder
as of version 1.20. You
Interface to actiCAP ControlSoftware
can choose whether to
keep working with the
actiCAP ControlSoftware directly or to make use of the
interface offered by the BrainVision Recorder. If you use
the Recorder interface, the impedance values will be
saved automatically in the header file of your EEG data, so
that you no longer need to save them in a separate file.
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BrainVision RecView:
Software for real-time data analysis
The BrainVision Recording Viewer – referred to below as BrainVision RecView – is an add-on module for the BrainVision Recorder
that allows you to assess the quality of the EEG recording. The software allows you to process the recorded data in real-time and
provides a number of Online Processing Filters for this purpose.
In addition to traditional signal processing filters such as the Frequency Filter or the FFT Filter, BrainVision RecView
also provides special filters for correcting scanner and pulse artifacts for EEG data recorded in an MRI scanner (see
Figure “MRI Artifact Correction“). The Segmentation Filter and Averaging Filter also allow you the option of viewing
your data by segment and carrying out event-related and marker-based analyses. Furthermore, the LORETA Filter (see
Figure “LORETA“) allows you to calculate virtual channels over “regions of interest“ and to use the LORETA
method to trace signals back to their sources in the various regions of the brain.
In order to improve calculation of the spectrum, new configurable window
functions have been added to the FFT. BrainVision RecView as of version 1.4.1
can not only display the impedance values but also possesses an innovative
function for improving the quality of your EEG recordings: The Bridge Tool Filter
is used to detect gel bridges and assists you to prepare for the acquisition
of EEG data using a large number of channels.
LORETA
You can daisychain filters and introduce branches to create extensive filter trees,
thus allowing you, for instance, to take the output data from an MRI Artifact
Correction and use it as the input data for an FFT Filter. Or you can implement a Level
Trigger Filter after the LORETA Filter and use the voltage curve from your virtual ROI
channel to control a feedback application as part of a neurofeedback experiment.
The modular structure of RecView allows you to expand the software to incorporate
additional, user-defined filters in the same way as you can for the transforms of our
EEG analysis software BrainVision Analyzer.
MRI Artifact Correction
You can run BrainVision RecView on the computer on which the BrainVision
Recorder is installed or on further computers in the network. This networking capability means that you can run up to 10
BrainVision RecView programs simultaneously on different computers in conjunction with just one BrainVision Recorder.
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New Features of BrainVision RecView
Bridge Tool
A very helpful new feature when preparing EEG recordings with
a lot of channels is the new Bridge Tool: It detects gel bridges
right before starting your actual recording. This can help you
improve your data quality as well as teach you how to prepare
high density scalp EEG recordings and keep you from using
too much gel.
Linear Derivation
This filter allows you to create new channels from linear
combinations of existing channels. It is possible to load
coefficient matrices from text files, for example ICA matrices
generated by the Independent Component Analysis (ICA)
transformation in the BrainVision Analyzer. This means that
once you have calculated your ICA matrix offline, it can be
used to calculate ICs online. This new module is analogous
to the BrainVision Analyzer Linear Derivation transformation.
Level Trigger
The Level Trigger Filter allows
you to set threshold markers on
a channel or send configurable
TTL signals to the LPT port if
voltage limits are violated. The
new Level Trigger Filter is an
online version of the Level Trigger
in the Analyzer.
TTL
signals
to
your
computer´s
LPT
port
depending on the power
of a configurable frequency band. It can
for example be used to
measure the alpha level
and thus the relaxation
of a test subject and use
the LPT signals to trigger a
feedback application.
Band Power Trigger
R-Peak Trigger
The R-Peak Trigger is a module for detecting the R-peaks in
ECG data. TTL signals can be sent to the LPT port and markers
can be set into the data as R-peaks are detected. This
filter uses a fast peak detection algorithm which is only
suitable for ECG data recorded outside of an MRI environment.
Average Filter
Rectification and weighted averaging is now possible. The
new version of the Average Filter includes the options of
rectifying data and calculating the weighted average of
data blocks. The user can choose between equal,
triangular and exponential weighting functions.
Level Trigger
Band Power Trigger
The new Band Power Trigger Filter can be used to send
FFT
The FFT Filter has been equipped with new windowing
functions to help you explore the spectral properties of your
online data better.
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Technical Specifications: BrainVision Recorder / BrainVision RecView
Supported Amplifiers (BrainVision Recorder)
• BrainAmp Series (Standard, DC and ExG)
• BrainAmp MR Series (MR, MR plus and ExG MR)
• V-Amp and FirstAmp
• QuickAmp
Supported Operating Systems (BrainVision Recorder &
BrainVision RecView)
• Windows 7 (32 Bit and 64 Bit)
• Windows Vista (32 Bit) - Service Pack 1
• Windows XP (32 Bit) - Service Pack 3
Data Display (BrainVision Recorder)
• Topographic impedance display
• Continuous EEG and psychophysiological data
• Online segmentation, artifact rejection and averaging
• Display filters
• Channel grouping
• Events
Miscellaneous Options (BrainVision Recorder)
• Simple, wizard-driven hardware setup
• Channel-specific hardware and software
filter configuration
• Full support for sensors for psychophysiological signals
• Channel blocking
• DC correction
• EEG – MR scanner synchronization
• Real-time EEG server (TCP-IP) for RecView,
Neurofeedback, Biofeedback, BCI…
• Remote control by OLE automation
• Administrator settings
Saving Options (BrainVision Recorder)
• Continuous, segmented and averaged data
• Workspace properties
(hardware and software parameters)
• Impedance values
• Triggers and events (16-bit)
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ISO 13485:2010
MDD 93/42/EEC
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The CE marking confirms that the product conforms to the essential
requirements of the Medical Devices Directive 93/42/EEC (MDD),
Annex I., as amended by Directive 2007/47/EC
Worldwide Caution:
Limited by United States Law to Investigational Use. ID in accordance with 801.1
For research use only. IEC 62304 Class A (no damage or harm to health possible).
UMDNS code: subdivision EEG monitor, Biofeedback Software
For further information contact your local distributor or us at:
Brain Products GmbH
Zeppelinstrasse 7
82205 Gilching (Munich)
Germany
Tel. +49 (0) 8105 733 84 0
Fax +49 (0) 8105 733 84 33
sales@brainproducts.com
www.brainproducts.com
Version 001 04/2011
© Brain Products GmbH