The complex for paperless electroencephalography. (C) SMC MBN, Moscow, 1990-2000.

Stationary EEG-machine The stationary complex for EEG investigation is shown on the picture. It includes 20-channel EEG-machine, photic stimulator, Pentium computer and color printer.
On users request the system is additionaly completed with audiostimulator, laser printer, the data archiving devices ZIP or CD-W, camera for videoimage monitoring and recording.

Portable EEG-machine A compact 16-channel amplifier with   photic stimulator and Notebook with color display may be used as portable EEG-machine, which provides the recording quality on the top-level stationary devices.

The program NeuroKartograph. Neurokartograph version 4 is a 32-bit multithread program for Windows 95/98 or NT.

The program combines the powerfull set of functions for the mathematical analysys of the EEG with the simple, intuitive clear interface.

Recording During the process of the EEG recording the user can executively change the parameters of the amplifier and stimulators by means of special control panel.

Листание назад During the process of the EEG recording the user can "scroll back" the record, comparing on the single screen the different epochs of the record. This for example may be usefull for the visual analysis of the EEG structure changes during the functional test, such as the hyperventilation.

There also exists the possibility to display on the screen two (and more) different records, and not only the native curves but alse any kind of procession result.

Montage editor The regular configuration contains 8 bipolar montages standard for the '10-20 % system'. The user can construct and save his own configurations for the less number of channels, Yung system, averaged electrode ets. The quantity of user-defined montages is not restricted.

The process of montage edition is shown here.

Filtering One of the most significant methods of the numeric procession of the EEG is the frequency filtering. The software filtering during the data input gives the opportunity to widen the list of possible values of the time constant and higher frequency, increase the quality of the net rejection, without the complicated hardware (and consiquently increased safety and decreased price). Recurring filtering of recorded data, shown at the illustration, allows to reject the artifacts, appeared during the record (electrode vibration and so on) and to pick out the separate rhythms (for example, the picking out of the Delta-rhythm increases the accuracy of 3D localization of the tumour by the BrainLoc)

Amplitude analysis The presentation of the momental potentials values as the topographic maps  - amplitude mapping - allows to track the dynamics and localize the sources of the generation of the EEG activity.

Power spectrum Spectral analysis of the EEG is most frequently used in clinical practice. The analysis by the Fourieur method not only allows to quickly and objectively calculate the rhythms indexes in the selected record sections , but also to reveal the microchanges in the structure of the EEG activity.

Power maps The topographic maps of the power spectrum give the clear representation about the dominating rhythms and there localization. The power maps in 4 standard bands are shown here: Delta, Theta, Alpha and Beta.

Spectral dynamics Here is shown another example of the usage of the method of spectral mapping. Presented 6 maps, calculated for the same frequency band 2-5 Hz in the different record parts shows the dynamics and the localization of the epileptiformic activity source.

Coherence The number of publications devoted the usage of the coherence function in clinical practice is increased during last years.

The different methods of the presentation of the results of the coherence analysis are realised in the program: graphics, histograms, tables and topographic maps.

Data base The data base allows to manage the card-index of the investigated patients, to devide the records list into the groups, to sort by patients family, record date, diagnosis and to quickly find on the any of field; export and import data to the standard formats to process by other programs; backup data to ZIP or CD ets.

Table of values All procession results may be displayed as the table of values, written to ASCII file or exported into Microsoft Excel.

Semiautomatic conclusion The specially designed set of templates and macros allows to use the powerfull editor Microsoft WinWord for semiautomatic forming and printout of the conclusion.


The program is written by Andrey Pirozhenko. The medical consultations were provided by prof. L. Sumsky, Sklifasovsky Institute, Moscow.