کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6026292 | 1580905 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Contralateral dominance of corticomuscular coherence for both sides of the tongue during human tongue protrusion: An MEG study
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کلمات کلیدی
TMSMRPsAPBECDsMRFs - MRF هاabductor pollicis brevis - ابداکتور کوتاهEMG - الکترومیوگرافیelectromyography - الکترومیوگرافیMRI - امآرآی یا تصویرسازی تشدید مغناطیسیstandard deviation - انحراف معیارIsometric muscle contraction - انقباض عضله ایزومتریکMEG - بهanalyses of variance - تجزیه و تحلیل واریانسTranscranial magnetic stimulation - تحریک مغناطیسی مغزANOVA - تحلیل واریانس Analysis of varianceMagnetic resonance images - تصاویر رزونانس مغناطیسیstandard error of the mean - خطای استاندارد میانگینEquivalent current dipoles - دو قطبی فعلی معادلprimary motor cortex - قشر حرکتی اولیهSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیmagnetoencephalography - مغناطیس مغزMEPs - نمایندگان مجلسNeural oscillation - نوسان عصبیHypoglossal motor nucleus - هسته موتور هیپوکلوزالیmotor-evoked potentials - پتانسیل حرکت موتورMovement-related potentials - پتانسیل مربوط به جنبش
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب شناختی
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چکیده انگلیسی
Sophisticated tongue movements contribute to speech and mastication. These movements are regulated by communication between the bilateral cortex and each tongue side. The functional connection between the cortex and tongue was investigated using oscillatory interactions between whole-head magnetoencephalographic (MEG) signals and electromyographic (EMG) signals from both tongue sides during human tongue protrusion compared to thumb data. MEG-EMG coherence was observed at 14-36Â Hz and 2-10Â Hz over both hemispheres for each tongue side. EMG-EMG coherence between tongue sides was also detected at the same frequency bands. Thumb coherence was detected at 15-33Â Hz over the contralateral hemisphere. Tongue coherence at 14-36Â Hz was larger over the contralateral vs. ipsilateral hemisphere for both tongue sides. Tongue cortical sources were located in the lower part of the central sulcus and were anterior and inferior to the thumb areas, agreeing with the classical homunculus. Cross-correlogram analysis showed the MEG signal preceded the EMG signal. The cortex-tongue time lag was shorter than the cortex-thumb time lag. The cortex-muscle time lag decreased systematically with distance. These results suggest that during tongue protrusions, descending motor commands are modulated by bilateral cortical oscillations, and each tongue side is dominated by the contralateral hemisphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 101, 1 November 2014, Pages 245-255
Journal: NeuroImage - Volume 101, 1 November 2014, Pages 245-255
نویسندگان
Hitoshi Maezawa, Tatsuya Mima, Shogo Yazawa, Masao Matsuhashi, Hideaki Shiraishi, Yoshiyuki Hirai, Makoto Funahashi,