A method for gyroless missile control in the polar coordinate system is proposed. Motion of a material point under control force is studied. Frequency characteristics of all of the system components have been calculated. A correction filter has been chosen. Stability margin and the transfer coefficient of the con trol system have been determined. Mathematical simulation has been carried out. The missile flight trajecto rys have been obtained.

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Functional hemispheric asymmetry (FHA) of the brain is the subject of numerous neurophysiological, psychological, and clinical studies [2,[5][6][7]. Specialization and mutual interaction of the cerebral hemispheres play a crucial role in higher mental activities, development of personality and individual faculties, compensation of functional disorders of the central nervous system, etc. Development of new methods for rehabilitation and correction of behavior is challenged by the increasing incidence of neurological disorders in children and adolescents. A comprehensive approach to the rehabilitation of handicapped children combines noninvasive electrostimulation at the sites of neuromuscular and sensory disorders with programs of individual psychological and pedagogical correction [3,5]. An integrated method for monitoring, examination, and rehabilitation of handicapped children is presently under development in the Scientific-Practical Center of Clinical Neurophysiology and Neurorehabilitation. This method should provide measurement of deviations of the functional parameters from given values.Dynamic studies of FHA, interaction of the cerebral hemispheres, and mechanisms of modification of the individual profile of hemispheric asymmetry (IPHA) do not fully meet the requirements for the feedback control of the process of rehabilitation. This is mainly due to an excessively long time interval between the action and manifestation of its effect. The mean level of coherence between the leads within a given frequency range can be used as a marker of changes in the spacetime structure of the bioelectrical activity of the brain. This marker was effectively used for studying FHA in children with sensory deprivation and retarded mental development. This marker was also found to be effecScientific-Practical Center of Clinical Neurophysiology and Neurorehabilitation. Tolstoy State Pedagogical University, Tula. 154tive for studying the efficacy of Nootropil preparations for treating children with minimal brain dysfunction and the efficacy of electrostimutation of the optic nerve in case of its partial atrophy [5][6][7].The neurological status of a group of children and adolescents living in the Tula Region was studied. The group included ten 13-year-old gymnasia pupils. A complete medical history of each pupil (including the past medical history and family history) was taken. Only apparently healthy children were selected for examination. The individual profile of hemispheric asymmetry was determined using the results of observation of the pupils during biology classes and the results of special tests and examinations. One of the goals of this study was to develop a method of teaching biology taking into account the IPHA level of pupils. Electrophysiological examinations (electroencephalography (EEG), rheoencephalography (REG), audiometry; measurement of cardiac intervals, evoked occipital potentials (EOP), and time of visual-motor reaction) were performed at the Scientific-Practical Center of Clinical Neurophysiology and Ne...

IntroductionThe study is based on the concept that neurological disorders (ND) lead to appearance of stable connections in the cerebral cortex; these connections arise due to adaptation of the central nervous system (CNS) to work under changed conditions.In view of serious consequences of neurological dis orders, it is necessary to identify ND as early as possible during mass screening of children [1].One of the basic methods to study how the brain and nervous system function is to perform registration and analysis of biopotentials. Depending on how impact on the patient is organized and what processing methods are used, diagnostic systems (DS) can be distinguished as systems for registration of electroencephalogram (EEG) and evoked potentials (EP).Russian companies manufacture several modern computer electroencephalographs that have similar char acteristics: MITsAR EEG (Mitsar Ltd., St. Petersburg), electroencephalograph Neiron Spektr 3 (Neirosoft, Ivanovo); computer analyzers Entsefalan EEGR 19/26 (Medikom MTD, Taganrog), system Neirokartograf (IMP MBN, Moscow), and others.To identify cortical connections that characterize the integrative activity of CNS and its deviation from the standard, in DS a function coherence device is used [4]. During the calculations, it is necessary to perform differ ent operations requiring high skills (more in mathematics than in medicine). As a result, existing DS cannot be used for neurological screening.The goal was to create an EEG based DS for ND screening in children, ensuring reduction of time and medical staff necessary for the procedure together with making conclusions on necessity to contact a doctor.The following problems were solved: development of DS structure, mathematical model of a self tuning filter (STF) and methodology for synchronization parameters quantifying on the basis of the EEG signal processing using STF, identification of reliable ND signs by the parameters of synchronization based on processing EEG of children with known diagnosis, development of algo rithm for ND diagnosis and gross CNS pathology in chil dren. Materials and MethodsTheoretical basis of the study are works of M. N. Livanov and his colleagues who believed synchronized electrical activity of the relevant parts of the cortex to be the main condition of self awareness, decision making, and associative thinking. Non gross ND (vision, hearing, minimal brain dysfunction (MBD)) from physiological perspective is primarily the inadequacy of relationships in the cerebral cortex.Development of an automated diagnostic system (ADS) was constrained by lack of an EEG signal pro cessing method that would provide complex implementa tion of heterogeneous diagnostic tasks: gross pathology identification (a requirement for screening), impairment of hearing and/or vision, minimal brain dysfunction, reg istration of visual and cognitive evoked potentials (VEP and CEP) in minimal time.An ADS should be a subsystem of gross pathology (GP) identification, especially of epilepsy. The problem A method for EEG proces...

There was proposed a method for studying and mapping the cognitive activity of the brain. The experiment simulates a flight situation: the appearance of an image, recognition, a motor act (inner speech). Electroencephalogram was recorded with cognitive load. Two figures are presented on the laptop screen- a circle and a square. At the moment of presentation of the stimulus, the matching device sends a synchronizing pulse to one of the inputs of the electroencephalogram amplifier. The subject mentally names a figure with a larger area. A selective filter system suppresses background activity. The resonant frequencies of the filters are changed to reveal a single cognitive response to a stimulus. The parameters of the model are individual for each subject. There was developed a model of a diagnostic device. The results obtained for the “circle” and “square” figures coincide at time interval corresponding to the work of the sensory visual system, but they differ at the stage of internal speech, which corresponds to pronouncing a longer word by the syllables. These results demonstrate the effectiveness of modeling in studies on the localization of the cognitive process and the diagnosis of neurological disorders.