The Brain. Brain versus Computer (hardware) NumbersHuman brainVon Neumann computer # elements10 10 - 10 12 neurons10 7 - 10 8 transistors # connections.

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Presentation transcript:

The Brain

Brain versus Computer (hardware) NumbersHuman brainVon Neumann computer # elements neurons transistors # connections / element switching frequency10 3 Hz10 9 Hz energy / operation Joule10 -6 Joule power consumption10 Watt Watt reliability of elementslowreasonable reliability of systemhighreasonable

Brain versus Computer (information processing) FeaturesHuman BrainVon Neumann computer Data representationanalogdigital Memory localizationdistributedlocalized Controldistributedlocalized Processingparallelsequential Skill acquisitionlearningprogramming No memory management, No hardware/software/data distinction

Magnetic Resonance Imaging - MRI (fMRI) scanner Enables functional mapping Brain Activity mapping Fiber tracking and mapping

Fiber Tracking Uncinate Fasciculus Corpus Callosum & Cingulum Corona Radiata Inferior Longitudinal Fasciculus Superior Longitudinal Fasciculus

EEG Non Invasive, enables continuous monitoring. Epileptic Seizure detection Brain Computer Interface

Animal Hearing Frequencies

Big Brown Bat

Sonar Applications

Ultrasound is based on Sonar

Sonar Principle

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