Motor cortex activation during visuomotor transformations: evoked potentials during overt and imagined movements

Syrov, N.; Yakovlev, L.; Kaplan, A.; Lebedev, M.

Авторы: Syrov N., Yakovlev L., Kaplan A., Lebedev M.
Журнал: Cerebral Cortex
Том: 34
Номер: 1
Год издания: 2024
Издательство: Oxford University Press
Местоположение издательства: United Kingdom
Первая страница: 1
Последняя страница: 12
DOI: 10.1093/cercor/bhad440
Аннотация: Despite the prevalence of visuomotor transformations in our motor skills, their mechanisms remain incompletely understood, especially when imagery actions are considered such as mentally picking up a cup or pressing a button. Here, we used a stimulus-response task to directly compare the visuomotor transformation underlying overt and imagined button presses. Electroencephalographic activity was recorded while participants responded to highlights of the target button while ignoring the second, non-target button. Movement-related potentials (MRPs) and event-related desynchronization occurred for both overt movements and motor imagery (MI), with responses present even for non-target stimuli. Consistent with the activity accumulation model where visual stimuli are evaluated and transformed into the eventual motor response, the timing of MRPs matched the response time on individual trials. Activity-accumulation patterns were observed for MI, as well. Yet, unlike overt movements, MI-related MRPs were not lateralized, which appears to be a neural marker for the distinction between generating a mental image and transforming it into an overt action. Top-down response strategies governing this hemispheric specificity should be accounted for in future research on MI, including basic studies and medical practice.
Добавил в систему: Каплан Александр Яковлевич

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ЦЭМИ РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ЦЭМИ РАН

Motor cortex activation during visuomotor transformations: evoked potentials during overt and imagined movementsстатья

Прикрепленные файлы