1. Ensemble Synchronization in Schizophrenia Kaushik Majumdar, ISI Bangalore Joint work with Pradeep D. Prasad (ISI), John P John (NIMHANS), H. N. Harsha (Nitte University) https://sites.google.com/site/isicng/ (Computational Neuroscience Group) Electrical Geodesics Inc & Neuroinformatics Center, UO, 15 Nov. 2013

2. Video Synchronization: Snapshot

3. Pairwise Hilbert Phase Synchronization Prasad et al. Clin. EEG Neurosci. 44(1): 16 – 24, 2013

4. Hilbert Transformation and Instantaneous Phase

5. Phase Synchronization Prasad et al. 2012

6. Cross Modal Task

7. Videos  Healthy control subject http://youtu.be/4aFMQFhiRHw http://youtu.be/4aFMQFhiRHw  Patient with schizophrenia http://youtu.be/-TECG5XQhB4 http://youtu.be/-TECG5XQhB4

8. Multi-channel synchronization

9. Single Trial Ensemble Synchronization

10. Trial Averaged Ensemble Synchronization

11. ERSP & ITC

12. Trial Selection

13. Classification by Logistic Regression  3 dimensional feature space: 1.Ensemble right hemispheric synchronization. 2.Ensemble left hemispheric synchronization. 3.Response latency.

14. 2 Dimensional Projection of 3 Dimensional Feature Space Cross is patient with schizophrenia square is healthy control subject Incongruent stimulus

15. 2 Dimensional Projection of 3 Dimensional Feature Space Congruent stimulus Plus is patient with schizophrenia circle is healthy control subject

16. 2 Dimensional Projection of 3 Dimensional Feature Space Neutral stimulus Star is patient with schizophrenia diamond is healthy control subject

17. Average Accuracy

18. Probabilistic Score

19. Reference  P. D. Prasad, H. N. Halahalli, J. P. John and K. Majumdar, “Single-trial EEG classification using logistic regression based on ensemble synchronization,” accepted in IEEE Journal on Biomedical and Health Informatics.