کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9021747 | 1561379 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
N10 component in median nerve somatosensory evoked potentials (SEPs) is not an antidromic motor potential
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شناسی مولکولی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: N10 component in median nerve somatosensory evoked potentials (SEPs) is not an antidromic motor potential N10 component in median nerve somatosensory evoked potentials (SEPs) is not an antidromic motor potential](/preview/png/9021747.png)
چکیده انگلیسی
There is a hypothesis that the N10 far-field potential in median nerve somatosensory evoked potentials (SEPs) is generated by the antidromic volley of the motor axons. To test this hypothesis, we examined five patients with amyotrophic lateral sclerosis (ALS) showing pronounced or complete denervation of median-innervated small hand muscles. We evaluated N10 over scalp and proximal plexus volleys (PPVs) at lateral or anterior cervical electrode. As a result, N10 and PPVs were definitely preserved for every ALS subject. N10 amplitudes of ALS subjects were even significantly larger than control subjects. In one ALS patient completely lacking motor axons, N10 was larger than the largest one among control subjects. These results clearly indicate that N10 is not predominantly generated by motor axons but by the whole median nerve dominated by sensory axons. We propose a hypothesis that N10 is a junctional potential generated by the entrance of the median nerve into bone at the intervertebral foramen, producing a positive pole at the non-cephalic reference electrode. Significantly larger N10 in ALS subjects may be due to the lack of cancellation by slower motor axons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Congress Series - Volume 1278, March 2005, Pages 79-82
Journal: International Congress Series - Volume 1278, March 2005, Pages 79-82
نویسندگان
M. Sonoo, Y. Hatanaka, H. Tsukamoto, E. Ito, Y. Tsai-Shozawa, T. Shimizu,