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 Source coherence analysis reveals the
functional connectivity between brain regions. This is achieved by transforming
the surface signals into brain activity using brain source montages derived from
multiple source models. The new Source Coherence Module provides an extremely
fast and user-friendly implementation of time-frequency analysis based on
complex demodulation. Users can create event-related time-frequency displays of
power, amplitude, or event-related (de)synchronization and coherence for the
current montage using brain sources or surface channels. Induced and evoked
activities can be separated.
Time-frequency analysis
- Time-frequency diagrams based on
surface or source channels
- Display of absolute power or spectral
amplitude
- Display of event-related spectral
perturbation (ERD / ERS) in percent
- Temporal-spectral information optimized
by complex demodulation
- Variable setting of time-frequency
resolution
- Separation of evoked and induced
activity by subtraction of the averaged evoked activity from single trials
Source coherence
-
 Calculation of cross-spectral matrices
between any combination of source (and / or surface) channels
- Event-related coherence displayed in
time-frequency space
- Coherence analysis based on power and
phase locking
- Computation and display of phase delay
and latency difference between channels
Copyright © Megis GmbH |
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Copyright © 2007
Cortech Solutions
Updated:
01-Nov-2008 |
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Note that our products are not
designed for medical use in diagnosis or treatment of
disease. We sell scientific equipment to research
scientists working in a variety of fields, but we do not
offer any products for, nor do we intend for any of our
research products to be used for, diagnosis or treatment
of disease. Contact us with questions or comments about
this web site.
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