The Method to Reveal Pathologic Activity of Human Brain in the Magnetic Encephalography Data
Pankratova N.M., Ustinin M.N., Llinás R.R.
Institute of Mathematical Problems of Biology RAS, Pushchino, 142290, Russian Federation
New York University, New York, NY, 10016, USA
Pushchino State Institute of Natural Sciences, Pushchino, 142290, Russian Federation
Abstract. The method is proposed to find moments of time for averaging without external triggers. The Karhunen-Loeve eigenfunctions are used as a features for signal recognition. The method makes it possible to extract the signal from the experimental data for evoked and spontaneous activity. Application of the method to tinnitus studies revealed gamma-band bursts of activity in several experiments.
Key words: magnetic encephalography, Karhunen-Loeve expansion, spectral analysis, evoked activity, tinnitus pathology.