کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6273449 | 1614801 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Changes of motor-cortical oscillations associated with motor learning
ترجمه فارسی عنوان
تغییرات نوسانات حرکتی مغزی مرتبط با یادگیری حرکتی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
PMCITIERDSRTTTMSHumans - انسانMEG - بهTranscranial magnetic stimulation - تحریک مغناطیسی مغزlong-term potentiation - تقویت درازمدتLTP - تقویت طولانی مدت یا LTP primary motor cortex - قشر حرکتی اولیهPrimary sensorimotor cortex - قشر سنسوری اولیهPremotor cortex - قمر premotormagnetoencephalography - مغناطیس مغزevent-related desynchronization - ناسازگاری مربوط به رویدادserial reaction time task - کار زمان واکنش سریال
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
چکیده انگلیسی
Motor learning results from practice but also between practice sessions. After skill acquisition early consolidation results in less interference with other motor tasks and even improved performance of the newly learned skill. A specific significance of the primary motor cortex (M1) for early consolidation has been suggested. Since synchronized oscillatory activity is assumed to facilitate neuronal plasticity, we here investigate alterations of motor-cortical oscillations by means of event-related desynchronization (ERD) at alpha (8-12Â Hz) and beta (13-30Â Hz) frequencies in healthy humans. Neuromagnetic activity was recorded using a 306-channel whole-head magnetoencephalography (MEG) system. ERD was investigated in 15 subjects during training on a serial reaction time task and 10Â min after initial training. The data were compared with performance during a randomly varying sequence serving as control condition. The data reveal a stepwise decline of alpha-band ERD associated with faster reaction times replicating previous findings. The amount of beta-band suppression was significantly correlated with reduction of reaction times. While changes of alpha power have been related to lower cognitive control after initial skill acquisition, the present data suggest that the amount of beta suppression represents a neurophysiological marker of early cortical reorganization associated with motor learning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 275, 5 September 2014, Pages 47-53
Journal: Neuroscience - Volume 275, 5 September 2014, Pages 47-53
نویسندگان
B. Pollok, D. Latz, V. Krause, M. Butz, A. Schnitzler,