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Fixation based event-related fMRI analysis: Using eye fixations as events in functional magnetic resonance imaging to reveal cortical processing during the free exploration of visual imagesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 апреля 2015 г.
- Авторы: Marsman J.B.C, Renken R., Velichkovsky B.M., Hooymans J.M., Cornelissen F.W.
- Журнал: Human Brain Mapping
- Том: 33
- Номер: 2
- Год издания: 2012
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- Первая страница: 307
- Последняя страница: 318
- DOI: 10.1002/hbm.21211
- Аннотация: Eye movements, comprising predominantly fixations and saccades, are known to reveal information about perception and cognition, and they provide an explicit measure of attention. Nevertheless, fixations have not been considered as events in the analyses of data obtained during functional magnetic resonance imaging (fMRI) experiments. Most likely, this is due to their brevity and statistical properties. Despite these limitations, we used fixations as events to model brain activation in a free viewing experiment with standard fMRI scanning parameters. First, we found that fixations on different objects in different task contexts resulted in distinct cortical patterns of activation. Second, using multivariate pattern analysis, we showed that the BOLD signal revealed meaningful information about the task context of individual fixations and about the object being inspected during these fixations. We conclude that fixation-based event-related (FIBER) fMRI analysis creates new pathways for studying human brain function by enabling researchers to explore natural viewing behavior. © 2011 Wiley Periodicals, Inc.
- Добавил в систему: Величковский Борис Митрофанович