Российская академия наук


SEQUENCE OF MOVEMENTS OF RIGHT OR LEFT HAND DURING LONG- OR SHORTTIME MEMORIZATION



страница143/848
Дата10.12.2019
Размер1.98 Mb.
1   ...   139   140   141   142   143   144   145   146   ...   848
SEQUENCE OF MOVEMENTS OF RIGHT OR LEFT HAND DURING LONG- OR SHORTTIME MEMORIZATION

Bobrova E.V., Lyakhovetskii V.A., Bogacheva I.N.

Pavlov Institute of Physiology RAS, Saint-Petersburg, Russia; eabobrovy@gmail.com


Differences in the mechanisms of the single movements of the right and left hands and of the sequences of these movements are connected with the localization of the brain area, which provide sequence movement control by both hands in the left premotor cortex. What are the features of mechanisms of learning sequences of hand movements?

This paper presents a comparative analysis of three series of experiments in which subjects repeatedly represented memorized sequence of movements of their right or left hand through six random positions on 2D plane. In all series right-handed volunteers performed the task first with one hand (right or left, the groups R or L, respectively) and continued by the opposite one. The number of repeated sequences of each hand was 36 and 30 in the first two series and 3 - in the third.

The results showed that the previous long work by the right hand (series 1 and 2, group R) leads to more accurate reproduction of the movements by continued left hand (as compared with the right hand and with the left hand in the group L). The previous short work by the right hand (Series 3, group R), on the contrary decreases the accuracy of the continued left hand. Therefore, left hand works better when it works after a large number of repetitions by the right hand (series 1 and 2), while the accuracy of the left hand after the right one worse at initial stages of training (with a small number of repetitions, series 3).

Data suggests that the way to encode information about the sequence, activated by the right hand, in the initial stages of training prevents subsequent task performance by the left hand, but after long-term training it has been successfully used. The differences are supposed to be connected with the increasing of possibility to use left-hemispheric mechanisms by the left hand as the consolidation of skill of sequence acquisition increases.



Каталог: news
news -> Умеренные когнитивные нарушения у больных с сосудистым поражением головного мозга 14. 01. 11 нервные болезни
news -> 15-й международный медицинский форум «качество и безопасность оказания медицинской помощи» нижегородская ярмарка россия, Нижний Новгород
news -> Сборник материалов
news -> Разработка технологии вкусоароматических добавок с применением сенсорных технологий
news -> «казұму 85 жыл: жетістіктері мен келешегі» халықаралық ғылыми-тəжірибелік конференция аясындағы «клиникалық фармация: халықаралық ТƏжірибе мен қазақстанның денсаулық сақтаудағы даму ерекшеліктері»
news -> Программа международной научно-практической конференции 14-15 апреля 2016 г. Курск 2016
news -> Российская академия наук отделение физиологических наук


Поделитесь с Вашими друзьями:
1   ...   139   140   141   142   143   144   145   146   ...   848




База данных защищена авторским правом ©zodorov.ru 2020
обратиться к администрации

    Главная страница