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Demo final torok

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coginfocom 2014

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Demo final torok

  1. 1. HOW WE NAVIGATE IN SPACE Cognitive map (Tollman, 1948) The Nobel Prize in Physiology or Medicine 2014  John O’Keefe, May-Britt and Edvard I. Moser - "for their discoveries of cells that constitute a positioning system in the brain„ So far what we know is mostly based on animal experiments  Place cells (O’Keefe & Dostrovsky, 1971)  Grid cells (Hafting, Fyhn, Molden, M. B. Moser & E. Moser, 2005)  Head direction cells (Taube, Muller, Ranck, 1990)
  2. 2. WINDOWS INTO THE BRAIN Several methods to measure neurak activity directly …  ECoG  Deep brain electrodes  EEG  MEG And indirectly  fMRI  PET, SPECT  NIRS
  3. 3. NECESSITY OF TOOLS Measure brain activity during  Active motion  In a 3 dimensional space Recent advancement  Portable EEG devices  CAVE and HMD systems (Oculus Rift)  Motion tracking  Online realistic graphical rendering  Communication between neuroscientists and computer scientists
  4. 4. HOW CAN WE SET UP AN EXPERIMENT T-maze experiment  Do they prefer one alley? Are the fruits associated with one alley? Talk  Define the experiment  Define the terms  Define the key features
  5. 5. IMPLEMENTATION VirCA + Experiment Controller  Experiments presented in Collaborative virtual environment Following methodology of psychological experiments  Experiment description provided in XML language  Standard, general descriptor  Schema support: validate Experiment descriptor schemantically Provide features for analysis and synchronization  Logging  Triggering via Parallel Port  Synchornization with active light-measuring on displays in 3D CAVE  Rewarding system
  6. 6. METHODOLOGY Experiment  Definition part and schedule part  Scene description  State of virtual environment for experiment  Stimuli  Including visual objects  Complete visual impact  Events  Including stimuli  Conditions and effects of stimuli  Scenario  Schedule of events  Conditions  time or user initiative (key press) T-Maze Experiment Descriptor  Movements depends on user choice
  7. 7. LET’S SEE HOW THAT WORKS !

coginfocom 2014

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