3D
EEG analysis under MATLAB
 What is g.HReeg toolbox for g.BSanalyze?
g.HReeg toolbox is an interactive environment for
high resolution EEG data processing. — The investigation of patterns and
signal features of EEG data combined with anatomical information based on
MRI or CT data allow to observe noninvasively brain functions and
disfunctions.
The graphical user interface of g.HReeg enables you
to perform the spatiotemporal analyses of multi-channel
electroenecephalogram data. 3D spatial highpass filtering allows to
visualize local EEG phenomena e.g. in the central areas. In addition, you
can load and save your preferred processing steps as a script program and
automatically process your data in batch mode.
 Combine EEG and anatomical data
Starting from segmented MR images,
boundary models for scalp and brain are automatically generated. In order to
see through the scalp, the transparency and the smoothness of the brain and
scalp boundary models can be chosen. EEG maps are displayed on the surface
of the scalp model or calculated as high resolution maps on the brain.
The high resolution EEG maps are calculated based on a 3D spline surface
Laplacain method. The head is represented by a spline model and this
geometric information is used in calculating the 2nd spatial derivatives.
Smoothing of the results is done via a truncated singular value
decomposition.
  Display Data Maps
Display sequences of spatially highpass
filtered data with 3D spline surface Laplacian method on the surface of the
head, at idealized planar electrode positions or on the surface of the brain.
 Rotate freely the head model and change the
view angle for optimal presentation and change colormaps for optimal
displaying spatiotemporal information in the maps
Package Includes
- Software modules
- help
manual
- hardlock
Technical Requirements
MATLAB, g.BSanalyze base versionCopyright © g.tec
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