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Biomedical subjects

D S Nadezhdin

Publications and source records attributed to D S Nadezhdin.

At least 19 recordsLinked to original sources
PubMedDate not supplied

[Development of instrumental technologies of assessment of higher mental functions in health and disease].

The current increase in the incidence of nervous and mental diseases makes it necessary to use monitoring means for dysfunctions of the central nervous system. The paper analyzes promising ways of development of medical engineering technologies for studies, diagnosis, and rehabilitation in higher mental dysfunctions. Particular emphasis is laid on the instrumental methods for examining the higher nervous performance and relevant technical means.

Adolescent↗
PubMedDate not supplied

[Instrumental means of psychophysiological studies of higher mental functions in children and adolescents--from devices and complexes to medical engineering technologies of diagnosis, rehabilitation and monitoring].

The paper outlines new engineering decisions of provision of medical engineering technologies of the quantitative assessment of the status and rehabilitation of higher mental functions of children and adolescents in health and in diseases. The theoretical and experimental rationales for the development of new technologies, basic principles and examples of their realization are given.

Adolescent↗
PubMedDate not supplied

[Patho- and neuropsychological monitoring in disorders of psychoneurological development by using testing and computer programs].

The paper outlines the computer-aided testing diagnostic systems used at the Moscow Therapeutical Research Center for Prevention and Treatment of Mental and Nervous Disability. They are based on the complex factorial approach. This approach takes into account the developmental vectors in a child. These include motor, perceptive, intellectual, and communicative vectors. The complex approach makes it possible not only to establish the actual level of development of basic higher mental functions, but to determine treatment-induced developmental changes and prognosis.

Age Factors↗
PubMedDate not supplied

[The Psychomat computer complex for psychophysiologic studies].

The authors analyze the principles of the design of a computed psychophysiological system for universal uses. Show the effectiveness of the use of computed technology as a combination of universal computation and control potentialities of a personal computer equipped with problem-oriented specialized facilities of stimuli presentation and detection of the test subject's reactions. Define the hardware and software configuration of the microcomputer psychophysiological system "Psychomat". Describe its functional possibilities and the basic medico-technical characteristics. Review organizational issues of the maintenance of its full-scale production.

Humans↗
PubMedDate not supplied

[Rhythmotest, Mnemotest, Binatest--a family of microprocessors for studying higher nervous activity in man].

The design of outfits for analysis and parametrization of the fundamental mechanisms and functions of the higher nervous activity (HNA) is one of the efficient approaches to solving problems of medicine equipment with technical facilities of deriving objective data on the CNS status of man. With this purpose in view, "Rhythmotest", "Mnemotest" and "Binatest" outfits unified in terms of methodology and engineering have been devised. Each of the outfits is a functional combined system that permits analyzing a definite mechanism of the HNA as a totality of its basic manifestations with the aid of different methods. "Rhythmotest" makes it possible to examine the mechanisms of assimilation and reproduction of rhythmic irritants, "Mnemotest" the mechanisms of memory and visual perception, and "Binatest" the mechanisms of making a decision. The outfits may be widely used in solving research and applied problems.

Decision Making↗
PubMedDate not supplied

[Systematic basis of analysis of action sequences in a "Binatest" device].

The paper presents a method for analysing and interpreting the results of patients' examination using a Binatest device. The examination was made in the situation of "optional choice" wherein multiple acts of choice from two alternative goal-oriented reactions lead only to positive results. The proposed analysis is based on the evaluation of previous quanta of behavior for further goal formation with limited analysis depth with three sequential events. The paper discusses what information may be derived from the analysis of monads, diads, and triads of step-by-step acts of choice. Four major parameters fit for the analysis and interpretation of the findings have been identified. These include diad asymmetry, runs, left and right stereotypies. Each parameter has its own value that is orthogonal towards the others, equal measurement limits, which are independent of their production, and fully determines the sequence of behavioral quanta at the depth of 3 events. It is shown that basic information on decision-making should be searched in the structure of sequential choice acts made by a patient during his/her examination rather than in the chosen behavioral acts themselves.

Algorithms↗