کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3071938 1188688 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in hemodynamic signals accompanying motor imagery and motor execution of swallowing: A near-infrared spectroscopy study
ترجمه فارسی عنوان
تغییرات سیگنال های همودینامیکی همراه با تصاویر حرکتی و اجرای حرکت بلع: مطالعه طیف سنجی نزدیک به مادون قرمز
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی


• Motor execution and imagery of swallowing led to comparable topographical distribution.
• Oxy-Hb decreased during motor imagery of swallowing in inferior frontal gyrus.
• Oxy-Hb increased during motor execution of swallowing in inferior frontal gyrus.

In the present study we investigated hemodynamic changes in the brain in response to motor execution (ME) and motor imagery (MI) of swallowing using near-infrared spectroscopy (NIRS). Previous studies provide evidence that ME and MI of limb movements lead to comparable brain activation patterns indicating the potential value of MI for motor rehabilitation. In this context, identifying brain correlates of MI of swallowing may be potentially useful for the treatment of dysphagia. Fourteen healthy participants actively swallowed water (ME) and mentally imagined to swallow water (MI) in a randomized order while changes in concentration of oxygenated hemoglobin (oxy-Hb) and deoxygenated hemoglobin (deoxy-Hb) were assessed. MI and ME led to the strongest NIRS signal changes in the inferior frontal gyrus. During and after ME, oxy-Hb significantly increased, with a maximum peak around 15 s after task onset. In contrast, oxy-Hb decreased during MI compared to a rest period probably because of motor inhibition mechanisms. Changes in deoxy-Hb were largely comparable between MI and ME, especially when participants used a kinesthetic motor imagery strategy during MI compared to no specific strategy. Hence, the present study provides new evidence concerning timing and topographical distribution of the hemodynamic response during ME and MI of swallowing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 93, Part 1, June 2014, Pages 1–10
نویسندگان
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