Abstract: The relevance of the study is determined by the increasing number of younger schoolchildren with difficulties in mastering reading and writing. In recent decades, the hypothesis has been confirmed that one of the causes of difficulties in mastering reading and writing in elementary school may be reduced sensory reactivity of the vestibular system. The article presents the results of an experimental study of dynamic visual acuity in children with learning difficulties. Dynamic visual acuity reflects the quality of interaction between the visual and vestibular systems. Its violations can complicate the development of reading and writing.
The study involved 35 primary school students with learning difficulties. The study was conducted on the basis of a pediatric neurological clinic, instrumental studies and vestibular training were conducted as prescribed by a neurologist. At the first stage, functional diagnostics of vestibular function was carried out. The functions of the otolith part of the vestibular apparatus were evaluated by the method of cervical vestibular evoked potentials. The functions of the horizontal semicircular channels of the vestibular apparatus were evaluated by measuring the duration of post-rotational nystagmus. The experimental group included children whose learning difficulties were combined with sensory hyperactivity of the vestibular system or asymmetry of sensory reactivity of the vestibular system.
Then the children underwent vestibular training on a riding simulator with visual biofeedback. The duration of the training is 14 days. The assessment of dynamic visual acuity was carried out by the standard method in sitting and standing positions before and after the training.
Dynamic visual acuity depends on the quality of the vestibulocular reflex. It is shown that vestibular training on a riding simulator with visual biofeedback significantly improves dynamic visual acuity in a group of children with hyperactivity, symptoms of astheno-neurotic syndrome, asymmetry of sensory reactivity of the vestibular apparatus. Further research is needed to assess the impact of the training results on the success of children in learning.

Abstract: In recent years, the number of students with learning difficulties has increased. Often, children with a high level of intellectual development cannot cope with the primary school program. The success of studying at school is largely determined by the level of development of the executive function. There is evidence that the results of sensorimotor tests coincide with the results of the evaluation of executive function. The purpose of the study: to find a connection between the results of sensorimotor tests and the academic performance of elementary school students.
The study involved 108 children aged 9-11 years. Annual marks in all subjects for grades 2 and 3 were taken into account. The diagnostic unit consisted of 7 hardware and software tests that evaluated various parameters of simple and complex sensorimotor reactions. Results. Factorial and regression analysis of the data were carried out, statistically significant relationships between academic performance and indicators of complex sensorimotor tests were revealed. The tests included three main elements of executive function: inhibitory control, working memory and cognitive flexibility. The results of certain sensorimotor tests predict academic performance in grades 2 and 3. Apparently, this is due to the fact that the tests simulate the learning process in real conditions when it is necessary to show cognitive flexibility. The relationship of academic performance with simple sensorimotor reactions has not been revealed.
Conclusion. The use of certain sensorimotor tests for older preschoolers and first grade students will allow identifying children at risk of learning difficulties before these difficulties arise and have a negative impact on the development of the child's personality. The use of software and hardware complexes for conducting sensorimotor tests makes it possible to examine large groups of children in a short time, which is convenient in educational institutions. The results of testing of younger schoolchildren will help to develop an optimal educational route for each child, taking into account the peculiarities of the functioning of the nervous system.