کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5926340 | 1571340 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evoked corticospinal output to the human scalene muscles is altered by lung volume
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
فیزیولوژی
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چکیده انگلیسی
Increases in lung volume inhibit the inspiratory output from the medulla, but the effect of lung inflation on the voluntary control of breathing in humans is not known. We tested corticospinal excitability using transcranial magnetic stimulation (TMS) to evoke a response in the scalene muscles. TMS was delivered at rest at three different lung volumes between functional residual capacity (FRC) and total lung capacity (TLC) during incremental inspiratory and incremental expiratory manoeuvres. Motor evoked potentials (MEPs) in scalenes were â¼50% larger at a high lung volume (FRC + â¼90% inspiratory capacity [IC]) compared to lower lung volumes (FRC and FRC + â¼40% IC) in both inspiratory and expiratory manoeuvres (p < 0.001). The change in MEP size was not due to differences in pre-stimulus EMG amplitude (p = 0.29). The results suggest a differential effect of lung inflation on the automatic and voluntary control of breathing in humans.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 180, Issues 2â3, 15 March 2012, Pages 263-268
Journal: Respiratory Physiology & Neurobiology - Volume 180, Issues 2â3, 15 March 2012, Pages 263-268
نویسندگان
Anna L. Hudson, Janet L. Taylor, Ashima Anand, Simon C. Gandevia, Jane E. Butler,