کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3047840 1185067 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrophysiological evaluation of motor pathways to proximal lower limb muscles: A combined method and reference values
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
Electrophysiological evaluation of motor pathways to proximal lower limb muscles: A combined method and reference values
چکیده انگلیسی

ObjectiveIn contrast with their important functional and clinical role, motor pathways to proximal muscles of lower limbs are rarely investigated in clinical neurophysiology. We describe a method to evaluate central and peripheral pathways to these muscles and report reference values.MethodsRecording of both quadriceps was performed in 100 subjects. We analyzed the maximal M response after electrical stimulation of the femoral nerve, the patellar T reflex and the motor evoked potential (MEP) after transcranial magnetic stimulation. We defined the central motor conduction time as the difference between the MEP latency and the peripheral motor conduction time, estimated as the half of the T latency minus 0.5 ms.ResultsThe mean MEP latency is 20.6 ms (SD 1.99 ms), central motor conduction time 10.1 ms (SD 1.29 ms), MEP/M amplitude ratio 60.0% (SD 15.75%). Normal limits according to height and age are provided for each parameter and for interside asymmetry.ConclusionsThis method to investigate the central and peripheral motor pathways supplying the L2–L4 myotomes is simple, painless and rapidly performed. The T reflex provides additional information on the proximal sensory pathways.SignificanceThis method will be useful in many clinical conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Neurophysiology - Volume 118, Issue 3, March 2007, Pages 513–524
نویسندگان
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