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CORRELATION & MODELLING OF EEG SIGNALS

CORRELATION & MODELLING OF EEG SIGNALS. A. Erol Fazlıoğlu. What is EEG?. Electroencephalography (EEG) is a medical imaging technique that measures brain function by analyzing the scalp electrical activity generated by brain structures. It is a completely noninvasive procedure .

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CORRELATION & MODELLING OF EEG SIGNALS

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  1. CORRELATION & MODELLING OF EEG SIGNALS A. Erol Fazlıoğlu

  2. What is EEG? • Electroencephalography (EEG) is a medical imaging technique that measures brain function by analyzing the scalp electrical activity generated by brain structures. • It is a completely noninvasive procedure. • The small electrical signals detected by the scalp electrodes are amplified thousands of times, then displayed on paper or stored to computer memory.

  3. How is EEG used? • It is currently being widely used to study the brain organization of cognitive processes such as perception, memory, attention, language, and emotion in normal adults and children. • For this purpose, the most useful application of EEG recording is the ERP technique.

  4. The ongoing EEG

  5. What are ERPs? • ERPs (event-related potentials) are small voltage fluctuations resulting from evoked neural activity. • The ERP reflects, with high temporal resolution, the patterns of neuronal activity evoked by a stimulus.

  6. How are ERPs used? • Due to their high temporal resolution, ERPs provide unique and important timing information about brain processing. • Mental operations, such as those involved in perception, selective attention, language processing, and memory, proceed over time ranges in the order of tens of milliseconds

  7. Obtaining ERPs from the ongoing EEG

  8. EEG WAVES AS DEFINED BY FREQUENCY • ALPHA  • BETA  • THETA  • DELTA

  9. NUMERICAL BRAIN MODELLING OF THE HUMAN EEG • The work focuses on the development of a mathematical model of the critical physiological mechanisms that underlie the electrical signals measured on the scalp.

  10. Thank You • Any Questions? • Erol Fazlıoğlu

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