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Visualization of Human Brain Wave Activity

PI: Dr Reza Tafreshi, Dr Beena Ahmed

The electroencephalogram (EEG) is perhaps the most important tool used to study neurological and sleep-related disorder. Three dimensional real-time visualization of a patient's EEG can provide an insight into the spatio-temporal dynamics of brain electrical activity and significantly simplify diagnosis. Currently brain wave activity is visualized using two dimensional plots of the EEG obtained from each of these electrodes with respective to time. The complex nature of the EEG electrode placement and the resulting plots makes it difficult for the untrained eye to understand the spatio-temporal dynamics of brain electrical activity.

The goal is to develop an application with the following features:

  • Show electrodes on a 3D human brain and indicate the variation in the voltage by changing the colors of electrodes.
  • When seizure is detected, indicate its location by changing the color of the region on the brain.
  • Give user the ability to control the EEG session using VCR-like controls e.g. play, pause, forward, rewind etc.
  • Render the 3D brain in stereoscopic mode.
  • Show the EEG graphs when the EEG session is in progress.
  • Pause the session when a seizure is detected.
Screenshot showing the brain on detection of the seizure