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Evoked coherence of EEC: II. Communication of cortical areas and level of processing [Evozierte Kohärenz des EEC: II. Kommunikation der Hirnareale und Verarbeitungstiefe]статья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Дата последнего поиска статьи во внешних источниках: 28 апреля 2015 г.
- Авторы: Velichkovsky B.M., Klemm T., Dettmar P., Volke H.J.
- Журнал: EEG-EMG Zeitschrift f∎r Elektroenzephalographie, Elektromyographie und verwandte Gebiete
- Том: 27
- Номер: 3
- Год издания: 1996
- Издательство: Georg Thieme Verlag
- Местоположение издательства: Germany
- Первая страница: 111
- Последняя страница: 118
- Аннотация: The in part one [42] introduced method of evoked coherences was used in search for independent signs of the levels of processing effects on memory performance. 9 subjects in a visual pilot study and 16 subjects in the acoustic main experiments were presented 30 words each in a perceptive, semantic and metacognitive orientation condition. A 16-channel-EEG was recorded and stimulus-related time-variant spectral components (5, o, a, ) were calculated for analysis of evoked coherence. In order to differentiate between task processing and general functional state of the brain in the main study one series of experimental conditions was carried out in the state of deep relaxation (trance). The evoked coherences were tested with multi-factorial ANOVA and contrasted by Sc/ieffe-test. As expected, the variation in the state of the consciousness was related with strong but diffuse changes in power and coherence spectra. In contrast to this, differences in level of processing were accompanied by specific focal patterns of evoked coherence with nearly no changes in power. Especially in the lower frequency bands there appeared differentiating coherences between posterior regions and single points of the frontal and left-temporal regions of the cortex. The data also supported the interpretation that deeper processing is characterized by a functional de-coupling of activity in progressively more anteriory located regions and within lower frequency band, particularly 5. © Georg Thieme Verlag Stuttgart.
- Добавил в систему: Величковский Борис Митрофанович