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ALPHA RHYTHM AS A MECHANISM OF LOCAL INHIBITION DURING SOLVING DIFFICULT MATHEMATICAL TASKSтезисы доклада
- Авторы: Semenyuk S.I., Danilova N.N.
- Сборник: XIII International interdisciplinary congress "Neuroscience for medicine and psychology" Sudak, Crimea, Russia, May 30-June 10, 2017
- Тезисы
- Год издания: 2017
- Место издания: Moscow
- Первая страница: 368
- Последняя страница: 368
- Аннотация: ALPHA RHYTHM AS A MECHANISM OF LOCAL INHIBITION DURING SOLVING DIFFICULT MATHEMATICAL TASKS, с. 367 Semenyuk S.I., Danilova N.N. Lomonosov Moscow State University, Moscow, Russia danilovan@mail.ru The aim of this work was to investigate the brain mechanisms of mathematical abilities, determined by the Test C. Mangina. Previously we have shown that math task of this test causes the parallel activity of frequency-selective theta (4-7 Hz) and alpha generators (8-13 Hz) in the left hemisphere. The task for "reading" is linked to the right hemisphere. It presented by increasing of the frequency-selective theta generators and the suppression of alpha activity. The great complexity of the math task was confirmed by a large number of errors and longer latency period during solution of the math task. The author's method - "Microstructural analysis of oscillatory brain activity" was used (Danilova, 2002), which works with the narrow-band frequency selective generators. In this study for the group of "mathematics" (the students of the Faculty of Mathematics) new data received on the behavior of two difference frequency generators alpha range (8-11 Hz and 11-13 Hz) and their relationship to different hemispheres during the solution "mathematical" tasks of the Test C. Mangina. In the left hemisphere, activity of the low-frequency alpha rhythm (8-11 Hz) was observed for three seconds, whereas the activity of the high-frequency alpha rhythm (11-13 Hz) in parallel decreased in the right hemisphere. The increase of the theta generators occurred in parallel in both hemispheres. Thus, two different frequency ranges of the alpha rhythm are tied to different hemispheres and demonstrate the opposite temporal dynamics. Two other groups of alpha rhythm (11-13 Hz) in the left hemisphere and (8-11 Hz) in the right hemisphere have very low levels of activity. Moreover, these two groups of alpha frequencies, localized in different hemispheres are revealed an opposite domed-shaped temporal dynamics. This suggests the existence of a special mechanism, which, when summing up the activity of both hemispheres, blocks precisely these alpha frequencies. As a result, a high level of alpha activity appears in the left hemisphere, whereas in the right hemisphere it does not work. The duration of activation of the alpha rhythm greatly exceeds the duration of the theta activity. This emphasizes the importance of the alpha rhythm function as a local inhibition. These data offer a new direction - the role of alpha rhythm in pathology, including Parkinson's disease. This work was supported by grant RSF № 14-18-03253
- Добавил в систему: Данилова Нина Николаевна