Brain Science Awareness Workshop, 15 March 2010 THE ELECTRIC BRAIN Kaushik Majumdar Systems Science and Informatics Unit Indian Statistical Institute Bangalore.

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Presentation transcript:

Brain Science Awareness Workshop, 15 March 2010 THE ELECTRIC BRAIN Kaushik Majumdar Systems Science and Informatics Unit Indian Statistical Institute Bangalore Centre

Brain Science Awareness Workshop, 15 March 2010 Satellite Image

Brain Science Awareness Workshop, 15 March 2010 An Object of Interest

Brain Science Awareness Workshop, 15 March 2010 Event Related Potential Parra et al. NeuroImage, 28: , 2005

Brain Science Awareness Workshop, 15 March 2010 Neurotechnology for Intelligent Analyst  Funded by Defense Advanced Research Project Agency (DARPA) of USA,  Aim: Identification of interesting objects, such as, tanks, trucks and boats in the grey level satellite images.

Brain Science Awareness Workshop, 15 March 2010 Human Brain

Brain Science Awareness Workshop, 15 March 2010 Cortex

Functional Division

Brain Science Awareness Workshop, 15 March 2010 Cortical Columns Mountcastle, Brain, 120: , 1997.

Brain Science Awareness Workshop, 15 March 2010 Blue Brain Project  Partners IBM & Ecole Polytechnique, Lusanne, Switzerland.  Started in 2006

Brain Science Awareness Workshop, 15 March 2010 Computer Generated Cortical Columns

Brain Science Awareness Workshop, 15 March 2010 Computer Generated Cortical Columns (cont.)  14 day old rat’s evolving brain.  0.5 mm in diameter.  1.5 mm in height.  neurons. Markram, Nature Reviews of Neuroscience, 7: , 2006

Brain Science Awareness Workshop, 15 March 2010 Neuron

Nerve Cell vs. Body Cell

Brain Science Awareness Workshop, 15 March 2010 Sodium-Potassium Pump

Brain Science Awareness Workshop, 15 March 2010 Membrane, Pumps and Ions Cell membrane Ion channel K+K+ Na + Na + -K + Pump Na + -K + pump Na + K+K+ Cl ¯

Brain Science Awareness Workshop, 15 March 2010 Ion Channels

Brain Science Awareness Workshop, 15 March 2010 Channel: Chemical Activation

Action Potential First node of Ranvier

Brain Science Awareness Workshop, 15 March 2010 Chemical-Electrical- Sequence

Brain Science Awareness Workshop, 15 March 2010 Cortical Current Baillet et al. IEEE Signal Processing Magazine, 14-30, 2001

Brain Science Awareness Workshop, 15 March 2010 Scalp Electrodes

Brain Science Awareness Workshop, 15 March 2010 Human Scalp EEG

Brain Science Awareness Workshop, 15 March 2010 Statistical Discrimination Majumdar and Frank (unpublished)