A MEASURING DEVICE OF EES INFORMATIVE PARAMETERS IN COMPLEX EXTREME CONDITIONS 

Tychkov Aleksandr Yur'evich, Candidate of engineering sciences, deputy director of the Research Institute of Fundamental and Applied Studies, Penza State University (40 Krasnaya street, Penza, Russia), tychkov-a@mail.ru
Churakov Petr Pavlovich, Doctor of engineering sciences, professor, sub-department of information-measuring equipment and metrology, Penza State University (40 Krasnaya street, Penza, Russia), iit@pnzgu.ru
Tychkova Anna Nikolaevna, Head of innovation analytical department, Penza State University (40 Krasnaya street, Penza, Russia), tychkov-a@mail.ru

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Background. The research object of is a device for electroencephalographic signals’ (EES) informative parameters measurement in respondents of extreme professions in conditions of an increased noise level (in complex extreme conditions). The research subject is the EES processing algorithms that improve the speed and accuracy of measurement results. The objective of the research is to carry out an analytical study of the known EES measuring devices, to develop a block diagram of the measuring device of the EES informative parameters and the EES processing algorithm in conditions of a increased noise level.
Materials and methods. To develop the block diagram of the measuring device of the EES informative parameters and the EES processing algorithm in conditions of an increased noise level during free motor activity of respondents the authors used techniques of digital signal processing (amplitude-frequency processing, bandpass filtering) and the basics of circuit design of measuring devices.
Results. An analysis of the known analytical solutions for the EES measuring informative parameters was done. The article shows development prospects of new solutions in development of the theory of digital signal processing for medical diagnosis purposes. The novel block diagram of the EES informative parameters measuring device and the EES processing algorithm in conditions of an increased noise level during free motor activity of respondents have been developed. A distinctive feature of the proposed solution is the algorithm has been supplemented with new blocks of analysis and comparison of EES with the norm and abnormality, as well as with block of suppression of the common mode noise, due to band-pass filter usage.
Conclusions. The proposed measuring device of the EES informative parameters in the biomedical practice, in contrast to the existing analog devices, can improve performance and efficiency of device more than 2 times owing to the use of the new EES processing algorithm in conditions of an increased noise level during free motor
activity of respondents. A distinctive feature of the algorithm is that the analysis of the EES frequency components is conducted in real-time with an automatic comparative analysis of frequency threshold value of theta, alpha and gamma waves per second.

measurement of informative parameters, EES processing, band-pass filtering, frequency components analysis

1. Patent № 2539004 Russian Federation. Sposob kontrolya vykhoda cheloveka-operatora iz kontura upravleniya [A method of controlling human-operator’s exit from a control loop]. Iznak A. F., Chayanov N. V. Pabl. Jan. 10, 2015.
2. Ventsevich L. E. Lokomotivnye ustroystva obespecheniya bezopasnosti dvizheniya poezdov i rasshifrovka informatsionnykh dannykh ikh raboty [Locomotive devices of train operation safety and decoding of performance data thereof]. Moscow: Marshrut, 2006, 328 p.
3. Gusel'nikov V. I., Iznak A. F. Ritmicheskaya aktivnost' v sensornykh sistemakh [Rythmic activity in sensor systems]. Moscow: Izd-vo MGU, 2008, 198 p.
4. Patent № 2332160 Russian Federation. Sposob issledovaniya elektroentsefalogrammy cheloveka i zhivotnykh [A method of electroencephalogram examination of people and animals]. Turovskiy Ya. A., Semenov A. G., Maksimov A. V., Kurgalin S. D. Pabl. Aug. 27, 2008.
5. Rybina I. Ya., Korenko L. A., Skoromets T. A. Elektroentsefalografiya [Electroencephalography]. Saint-Petersburg: Logos, 2004, 53 p.
6. Kokhanov V. P., Krasnov V. N. Psikhiatriya katastrof i chrezvychaynykh situatsiy (teoriya i praktika) [Disaster and emergency psychiatry (theory and practice)]. Moscow: Prakticheskaya meditsina, 2008, pp. 445–448.
7. Patent № 2444275 Russian Federation. Sposob i ustroystvo opredeleniya prostranstvennogo polozheniya glaz dlya vychisleniya linii vzglyada [A method and device for eye spatial position determination to calculate a line of sight]. Shevchik S. A., Velichkovskiy B. M., Velichkovskiy B. B., Vartanov A. V., Shapovalova V. V. Pabl. March 10, 2012.
8. Patent № 2479252 Russian Federation. Sposob i ustroystvo dlya izmereniya elektricheskogo potentsiala na kozhe golovy [A method and device for electric potential measurement on scalp]. Otto E., Bondzhers D. Pabl. Apr. 20, 2013.
9. Tychkov A. Yu., Churakov P. P., Kalistratov V. B., Tychkova A. N., Ageykin A. V. Psikhicheskoe zdorov'e [Mental health]. 2015, no. 8 (111), pp. 40–44.
10. Tychkov A. Yu. Biomedical Engineering. 2015, vol. 49, issue 1, pp. 37–41.