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3-Dimensional Source Localization and a LORETA Normative Database: Birth to 82 Years

 

                         

 

Download the free Key Institute LORETA programs at (www.unizh.ch/keyinst/NewLORETA/Software/Software.htm) and then request a copy of the Key Institute password. Once the Key Institute software is installed on the users computer then the LORETA viewer program can be launched directly from the NeuroGuide edit window.  See the Key Institute documentation to learn how the cross-spectrum and *.crs file is computed and then how the *.lorb is computed and then passed to the LORETA viewer by NeuroGuide.

 

3-Dimensional LORETA Normative Database

     

       The LORETA normative database involved computing the cross-spectrum of the EEG from each subject in the NeuroGuide normative database (click here for a description of the selection criteria and age range, etc.) for each 2,394 gray matter pixel and  a Key Institute *.crs file was created (1 to 30 Hz in 1 Hz steps).  After log10 transforms the means and standard deviations of the 2,394 LORETA currents were computed for different age groups from birth to 82 years thus enabling a Z score to be computed for each of the 2,394 gray matter pixels and displayed using the LORETA viewer.

     Time domain export is also available using NeuroGuide so that individual EEG events can be examined in detail in the time domain as well as to compare source localization in the frequency and the time domain.

 

 

NeuroGuide | NeuroStat | NeuroBatch | Neuropsych Regression-Brain Performance Index
Source Localization - Loretta Normative Database | Price List-Order Now | Formats Supported | FAQ/Applications Download User's Guide | Tutorials | Workshops | Services | Neurofeedback | Articles | Contact Us

 

Mindset 24 Channel QEEG Clinical System (Only $5600!) | Impedance Tester | Electro-caps for QEEG | Mindset Calibrator | Discovery 24 Channel QEEG Clinical System (Only $5800!)