1 / 19

Ensemble Synchronization in Schizophrenia

Investigating neural synchronization patterns in schizophrenia patients using EEG data and video analysis. This study explores ensemble synchronization and its implications for understanding the disorder.

kibo-nelson
Download Presentation

Ensemble Synchronization in Schizophrenia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electrical Geodesics Inc & Neuroinformatics Center, UO, 15 Nov. 2013 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)

  2. Video Synchronization: Snapshot

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

  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 • Patient with schizophrenia 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: • Ensemble right hemispheric synchronization. • Ensemble left hemispheric synchronization. • 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.

More Related