کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8840957 | 1614703 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surround Inhibition in the Primary Motor Cortex is Task-specifically Modulated in Non-professional Musicians but not in Healthy Controls During Real Piano Playing
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کلمات کلیدی
APBintra-cortical facilitationICFADMSICIRMTMEPBackground EMGFirst Dorsal Interosseous - ابتدای پشتی بینهایتabductor pollicis brevis - ابداکتور کوتاهresting motor threshold - استراحت آستانه موتورelectromyography - الکترومیوگرافیEMG - الکترومیوگرافیstandard deviation - انحراف معیارstandard error - خطای استانداردAbductor Digiti Minimi - رقیب Digiti MinimiFDI - سرمایهگذاری مستقیم خارجیprimary motor cortex - قشر حرکتی اولیهSurround inhibition - مهار محدودهmotor-evoked potential - پتانسیل حرکت موتورGABA - گاباgamma-amino-butyric acid - گاما آمینو اسید بوتیریک
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Research has indicated that at the onset of a finger movement, unwanted contractions of adjacent muscles are prevented by inhibiting the cortical areas representing these muscles. This so-called surround inhibition (SI) seems relevant for the performance of selective finger movements but may not be necessary for tasks involving functional coupling between different finger muscles. Therefore, the present study compared SI between isolated finger movement and complex selective finger movements while playing a three-finger sequence on the piano in nine non-professional musicians and 10 untrained control participants. Transcranial magnetic stimulation (TMS) was applied to the contralateral motor cortex to assess SI in the first dorsal interosseous (FDI), abductor pollicis brevis (APB) and abductor digiti minimi (ADM) during the movement preparation and the late phasic phases. The results reveal stronger SI during the preparation phase than during the phasic phase (30.6% vs. 10.7%; Pâ¯<â¯0.05) in the isolated-finger condition in both musicians and controls. Results also show higher SI in musicians during the preparation phase of the isolated finger condition compared to the preparation phase of the three-finger sequence (40% vs. 15%; Pâ¯<â¯0.05). However, the control group did not show this task-specific modulation of SI (isolated: 25% vs. sequence: 25%; Pâ¯>â¯0.05). Thus, musicians were able to modulate SI between conditions whereas control participants revealed constant levels of SI. Therefore, it may be assumed that long-term training as observed in skilled musicians is accompanied by task-specific effects on SI modulation potentially relating to the ability to perform selective and complex finger movements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 373, 1 March 2018, Pages 106-112
Journal: Neuroscience - Volume 373, 1 March 2018, Pages 106-112
نویسندگان
Gonzalo Márquez, Martin Keller, Jesper Lundbye-Jensen, Wolfgang Taube,