L.G. Akulov, J.P. Mukha, V.U. Naumov

Models of information measurement systems called bioinstrumental what used in electrophysiological investigations are described. By example of electroencephalographic system core modules specification it is given a variant of that practice construction with object approach of modern programming tools. The model is consist of: 1) several kinds of physiologic artifacts; 2) nonphysiological artifacts; 3) random noise; 4) standard rhythms forming mechanism; 5) evoked potentials model; 6) nonelectric environment influence; 7) physical model of fields transform by biological object; 8) different lead systems; 9) fast processing with and without reference signal; 10) fast signals classification. Models are describing by parts associated with signals type of system. First channel model is autoregressive dipole model of background EEG and event related potentials. Physiologic artifacts are represented by PQRST model of electrocardiogram and by EOG stored in file. Low frequency artifact of skin-electrode contact is modeled by signals formed before. Nonphysiological artifacts are represented by additive Gaussian noise and supply-line influence. In addition it is given a temperature influence on system.