کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4350348 | 1296982 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The location of brainstem neurons with bilateral projections to the motor nuclei of jaw openers in the cat
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The location of brainstem neurons with bilateral projections to the motor nuclei of jaw openers in the cat The location of brainstem neurons with bilateral projections to the motor nuclei of jaw openers in the cat](/preview/png/4350348.png)
چکیده انگلیسی
Symmetrical motor output is the rule in the masticatory system. We examined morphologically how this functional symmetry might be reflected in the organization of premotor neurons that could mediate excitation of jaw-opener motoneurons. Premotor neurons projecting bilaterally to jaw-opener motoneurons by way of axon collaterals were identified by retrograde dual-labeling with cholera toxin B-conjugated fluorescein isothiocyanate (CTb-FITC) and tetramethylrhodamine (TMR). In each cat, CTb-FITC and TMR were injected into the digastric motoneuron pools, respectively, on the left and right sides. In three animals, 69-147 neurons were labeled with both tracers, comprising â¼44% of all retrogradely labeled cells. Double-labeled cells were located bilaterally in the trigeminal oral nucleus (Vo) and the adjacent reticular formation (RF), the former containing a larger number of cells. Neurons labeled with only one tracer were also distributed bilaterally in the Vo and RF. The results indicated that the bilaterally projecting premoter neurons identified mainly in the Vo and RF represent neuronal substrates for the symmetry that characterizes most jaw movements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 403, Issue 3, 7 August 2006, Pages 250-255
Journal: Neuroscience Letters - Volume 403, Issue 3, 7 August 2006, Pages 250-255
نویسندگان
Masahiro Kondo, Yoshiyuki Tsuboi, Tatsuya Yamamoto, Toshihiko Inage, Yoshiki Iwamoto, Hiroyuki Kamogawa,