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Selective Involvement of Lingual Gyrus in Working Memory and Perception of Different Types of Visual Stimuliстатья Тезисы
Дата последнего поиска статьи во внешних источниках: 4 августа 2021 г.
- Авторы: Kozlovskiy S., Pyasik M., Korotkova A., Vartanov A., Kiselnikov A., Glozman J.
- Журнал: Journal of the International Neuropsychological Society : JINS
- Том: 20
- Номер: S2
- Год издания: 2014
- Издательство: Cambridge University Press
- Местоположение издательства: United Kingdom
- Первая страница: 43
- Последняя страница: 43
- DOI: 10.1017/S1355617714000915
- Аннотация: Objective: Present study explores brain activity related to memorizing different types of visual information. Participants and Methods: Participants were 15 subjects (33.5±14.5 years old). Working memory testing consisted of two series, which differed in the level of difficulty (0- and 1-back tasks), and control task - passive observation of the same stimuli. Presented stimuli were square patterns 9*9, which included grey (RGB: 100;100;100) and black (RGB: 0;0;0) squares set in three types of configuration (three types of stimuli, 16 variations each) – schematic faces, letters and geometric figures. In each part of the test stimuli were presented in 3 blocks of 120 stimuli (blocks of ‘faces’, ‘letters’ and ‘figures’). During the tests EEG (21 channels, monopolar) was registered. We calculated averaged ERPs of all subjects for each part of the test and stimuli type. Each individual ERP was presented as a number of equivalent dipole sources (two-dipole model, dipole coefficient > 0.95). The amount of dipole sources, located in each of the brain structures, according to Talairach atlas, was calculated for each ERP for 0-500 ms post stimulus. This allowed to further evaluate the probability of difference of the amount of dipole sources between each stimuli and task type (Student’s t-test, p < 0.05). Results: During the analysis of the obtained data, many facts were revealed, but in present study we would like to focus on the following findings. The activity of left lingual gyrus is significantly higher during memorizing faces (both for 0- and 1-back tasks) than during memorizing letters and geometric figures. On the other hand, the activity of right lingual gyrus was found in passive perception of letters and geometric figures but not in perception of faces. Conclusions: Thus, lingual gyrus is selectively involved in memory and perception of different types of visual stimuli.
- Добавил в систему: Козловский Станислав Александрович