کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2848368 1167419 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Responses of the diaphragm to transcranial magnetic stimulation during wake and sleep in humans
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
پیش نمایش صفحه اول مقاله
Responses of the diaphragm to transcranial magnetic stimulation during wake and sleep in humans
چکیده انگلیسی

The human ventilation depends on bulbospinal and corticospinal commands. This study assessed their interactions in five healthy volunteers (two men, age 25–35) through the description of diaphragm and abductor pollicis brevis (APB) motor potentials (DiMEPs, abpMEPs) evoked by transcranial magnetic stimulation (TMS) during relaxed expiration and tidal inspiration and during wake and sleep. NREM decreased corticospinal excitability and REM further did so, for both the diaphragm and the APB. During wake, inspiration shortened supine DiMEPs latencies (expiration 18.56 ± 1.90 ms; inspiration 17.37 ± 1.48 ms, P < 0.001). This persisted during sleep in an augmented manner (expiration: 21.05 ± 1.39 ms; inspiration 18.69 ± 1.17 ms, P = 0.002). Inspiration had no effect on apbMEPs during wake and sleep. In conclusion: (1) the tidal bulbospinal input to phrenic motoneurones is sufficient to modulate the throughput of the corticospinal pathway to these neurones; (2) this modulation is best seen after the sleep related removal of corticospinal and/or afferent inputs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 154, Issue 3, December 2006, Pages 406–418
نویسندگان
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