[Peculiarities of operative treatment of complicated forms of abdominal hernias].

The experience of treatment of 150 patients, suffering complicated forms of postoperative abdominal hernias (PAH), was summarized, In majority of patients the large and giant hernias, on a background of associated diseases, were revealed. It was established that complicated forms of PAH are associated with local or systemic infection component, causing the necessity of complex prophylactic measures conduction. Autoplastic and prosthetic methods of operations were applied; the indications for implantation procedures were elaborated.

[Chaotic non-linear dynamics of alpha-band of the EEg and organization of the cortical activity of P300 wave].

Variations of non-linear dynamic operations in of alpha-band of the EEG are reflected in the peculiarities of the P300 wave cortical field organization. In high-dimensional chaotic processes this field is characterized with high values of integral indices of its activity, the spatial synchronization of generating process as well as with the prevalence of P3a wave generation. The diversity of spatial combinations of P-wave sources reflects the high rate of their spatial complexity organization.

[Chaotic nonlinear dynamics of prestimulus EEG and the structure of auditory evoked potentials ].

The dynamic pattern of a prestimulus EEG was studied by the fractal analysis technique. The character of this pattern was shown to affect the structure of cortical auditory evoked potentials (EP). A monoperiodic pattern in the control frequency band was accompanied by a formation of several new attractors with low dimensionality attributed to simultaneous functioning of several weakly connected dynamic systems with an indefinite trend of a leading process.

[The adaptive regulation of the nonlinear dynamics of brain electrical activity].

The reinforcing automated stimulation of the emotional positive hypothalamic areas which was contingent upon the multiperiodical events in the EEG structure increased the number of episodes with non-linear dynamics. It resulted in an increase in the frequency of the intracranial self-stimulation. Under conditions of controlled experiment a possibility was shown of the intentional experimental formation of the EEG episodes with different types of non-linear dynamics.