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The activity of frequency-selective gamma and beta generators during working memoryстатья Тезисы
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Lukyanchikova M.S., Danilova N.N.
- Журнал: International Journal of Psychophysiology
- Том: 69
- Номер: 3
- Год издания: 2008
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 267
- Последняя страница: 268
- DOI: 10.1016/j.ijpsycho.2008.05.212
- Аннотация: The new method of the micro structural analysis for event-related oscillatory brain activity has been used for studying the working memory. The narrow-band frequency filtering of visual event-related potentials in the range between14 and 75 Hz was used. The three-dimensional dipole tracing (equivalent dipole) was combined with structural MRI to identify localizations of gamma and beta generators in brain. The subject had to retain four different double-digit in five seconds delay for the subsequent comparison with target and no-target stimuli and the performing of behavior response. During the retention of double-digits, we observed sustained activity of frequency-selective gamma and beta generators in the occipital cortex. The occipital activity was connected with parallel activity in the prefrontal (and/or anterior cingulate) cortex and cerebellum. Individual variations in cognition-related activity of frequency-selective gamma and beta generators are revealed. The activity of frequency-selective gamma and beta generators has intermittent character. With decrease in attention the contribution of beta generators in processes of working memory go up by parallel decreasing participation of gamma generators. This suggests that maintenance of the memory representation of double-digits for the subsequent recognition of target stimulus demands co-activation frontal brain areas with a visual cortex and a cerebellum that depends from individual cognitive styles. This work is supported by RFHR, grant 07-06-00421 a (Russia). doi:10.1016/j.ijpsycho.2008.05.212
- Добавил в систему: Данилова Нина Николаевна