FIELD: medicine, neurology, medicinal psychology, cardiosurgery, anesthesiology, resuscitation. SUBSTANCE: on the 7th-21st d of postoperative period one should fulfill neuropsychological testing. According to point-type system one should compare the state of tasks carried out. Then the sum of obtained results are entered into computer by their modality to evaluate the functions due to probabilistic mathematical modeling of repetition if inter- and intermodal dysfunctions by the following formulas: 
, where 
, where: Ai - impulse amplitude being equal to the value of defect's evaluation; τi - duration of one test; i - test's number, i=1,...N, N - total number of tests conducted and 
, where δ(k-i) - deltafunction, and k - tests' numbers. If manifestations of dysfunctions are more frequent and pronounced one can detect severity degree and clinical markedness of cognitive deficiency. The method suggested enables to perform objective control for therapy efficiency. EFFECT: higher efficiency. 3 dwg, 1 ex
