1. Video Synchronization in Schizophrenia Kaushik Majumdar, ISI Bangalore Joint work with Pradeep D. Prasad (ISI), John P John (NIMHANS), H. N. Harsha (NIMHANS) https://sites.google.com/site/isicng/ (Computational Neuroscience Group) INCF Workshop, Chennai, IITM & IMSc, 5-7 Nov. 2012

2. Video Synchronization: Snapshot

3. Pairwise Hilbert Phase Synchronization Prasad et al. Clin. EEG Neurosci. (to appear)

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, “Video synchronization: a new tool for dynamic visualization of multi- channel spatiotemporal synchronization patterns,” (under review).