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Presenter: MuhammadAwais Zahid SP11/Bcs-B5-021/SWL

Brain Signal Sensor. Presenter: MuhammadAwais Zahid SP11/Bcs-B5-021/SWL. COMSATS Institute of Information Technology ,Sahiwal. Content of Presentation . What are Brain Signals? Brain Computer Interface (BCI) What is an EEG? What is it good for? EEG Background EEG’s Working

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Presenter: MuhammadAwais Zahid SP11/Bcs-B5-021/SWL

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  1. Brain Signal Sensor Presenter: MuhammadAwais Zahid SP11/Bcs-B5-021/SWL COMSATS Institute of Information Technology ,Sahiwal.

  2. Content of Presentation • What are Brain Signals? • Brain Computer Interface (BCI) • What is an EEG? • What is it good for? • EEG Background • EEG’s Working • EEG electrodes • Electrode Placement • Brain Waves • Different Spectrum generated by EEG • EPOC EEG • Pricing • References

  3. What are Brain Signals? The brain is essentially a mass of cells, or neurons, which are capable of transmitting chemical signals to one another and propagating electrical signals internally. This information can be transmitted because neurons are each equipped with several special features that make them different from other cells.

  4. Brain Computer Interface (BCI) BCI is a technology that creates a direct connection from our brains to our computers. It is beginning to reach the market via toys and game controllers. In the process, these thought-controlled sensors are inspiring innovations that, for instance, allow you to call someone on your phone by simply thinking about them.

  5. What is an EEG? • An electroencephalogram is a measure of the brain's voltage fluctuations as detected from scalp electrodes. • It is an approximation of the cumulative electrical activity of neurons.

  6. What is it good for? • Neurofeedback • treating ADHD (Attention deficit hyperactivity disorder ) • guiding meditation • Brain Computer Interfaces • People with little muscle control (i.e. not enough control for EMG) • People with ALS (Amyotrophic lateral sclerosis), spinal injuries • High Precision • Low bandwidth (bit rate)

  7. EEG Background • 1875 - Richard Caton discovered electrical properties of exposed cerebral hemispheres of rabbits and monkeys. • 1924 - German Psychiatrist Hans Berger discovered alpha waves in humans and invented the term “electroencephalogram” • 1950s - Walter Grey Walter developed “EEG topography” - mapping electrical activity of the brain.

  8. EEG’s Working Simple view

  9. EEG’s Working cont.

  10. Electrode Placement • Standard “10-20 System” • Spaced apart 10-20% • Letter for region • F - Frontal Lobe • T - Temporal Lobe • C - Center • O - Occipital Lobe • Number for exact position • Odd numbers - left • Even numbers - right

  11. Electrode Placement cont. • A more detailed view:

  12. Brain Waves

  13. EEG electrodes • There are different type of electrodes used in EEG like :

  14. Different Spectrum generated by EEG

  15. EPOC's Neuroheadset Games & Virtual Worlds :Experience the fantasy of controlling and influencing the virtual environment with your mind. Play games developed specifically for the EPOC, or use the EmoKey to connect to current PC games and experience them in a completely new way.

  16. EPOC's Neuroheadset

  17. Pricing • EPOC EEG is available for $299 from http://www.emotiv.com/apps/epoc/299/ • EEG pricing of different macines: • Cadwell Easy II EEG PSG System $6,995.00 • Cadwell Easy III EEG PSG System $10,000.00 • Grass Technologies Comet PLUS Portable EEG $8,995.00 • For more pricing http://www.mfimedical.com/

  18. References: • http://readwrite.com/2010/07/20/6_brain_sensors_youll_be_using_soon#awesm=~oxBKl4ghP8aKsx • http://emotiv.com/epoc/features.php

  19. Thank you

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