EEG Research with graph theory Ivan Grechikhin

EEG  Electroencephalography (EEG) – special way to retrieve the activity of brains  Graph theory – good for visualization purposes o An electrode represents a point in graph o Every electrode has a characteristic – a numerical series o Measure of closeness of two electrodes must compare two numerical series o As a result, we must somehow display the most significant or interesting connections in brain.

Technique  Measures of closeness – coherency, imaginary part of coherency, synchronization likelihood  Minimal spanning trees (MST) were used as a structure for visualizing and researching  The goal is to find difference between brain properties of left-handed and right handed people  Summarizing, we try to find differences of MST properties for left- handed and right-handed people.