1. Visualization of Evoked EEG Responses: Trivector Visualization Emil Jovanov Associate Professor Electrical and Computer Eng. Dept. University of Alabama in Huntsville

2. Visualization of Evoked Potentials
EP - Insight into spatio-temporal dynamics of brain electrical activity
Important for cognitive studies
Animated 3D visualization improves perception of underlying activity
Tempo EP visualization environment
Quest for the right paradigm
Trivector NeuroScan (TVR) method
Quantitative analysis of activity
Scalar Assessment of Neurological Cognitive Deficits
March 19, 2004
IHMC 2004

3. 3D Topographic Map EEG ERP
March 19, 2004
IHMC 2004

4. TriVector – Electrodes
March 19, 2004
IHMC 2004

5. 2D plot example
March 19, 2004
IHMC 2004

6. TriVector – 3D Animation
3-D Animated Visualization
Animated visualization of the electrical evoked potential magnitude vectors
Virtual Source (red ball)
Fade out positions
Strength & direction
Dynamic animation as they sweep through the brain during interrogation via random or expected audio/visual stimuli
March 19, 2004
IHMC 2004

7. Trivector 3D Animation
March 19, 2004
IHMC 2004

8. Trivector 3D Animation
March 19, 2004
IHMC 2004

9. TVR conclusion and future work
Promising combination of EEG ERP and TVR ERP data
Real time analysis of the cognitive workload
Portable implementation
Research issues
Cognitive studies
Diagnostic applications
Perceptual issues
The role of artifacts
March 19, 2004
IHMC 2004