Mosconi T M, Rice F L
Department of Anatomy, Cell Biology and Neurobiology, Albany Medical College, NY 12208.
Neurosci Lett. 1991 Jan 2;121(1-2):199-202. doi: 10.1016/0304-3940(91)90684-l.
The guard and vellus hairs on the muzzles of many mammalian species possess a complex sensory innervation. The observation in the primate that the sources of the endings may be segregated by afferent type to separate terminal nerve branches prompted us to examine the innervation of the mystacial fur on the ferret muzzle. Sections were prepared with reduced silver techniques and serially reconstructed for analysis. The types and orientations of sensory endings in the ferret are similar to those described for the primate. However, we found that any terminal nerve branch could be composed of the full set of afferent types and therefore, there was no consistent segregation. The implications of these results on the afferent to target specificity during development and on multiple cortical representations are discussed.
许多哺乳动物口鼻部的触须和毳毛拥有复杂的感觉神经支配。在灵长类动物中的观察发现，末梢的来源可能根据传入类型被分隔到不同的终末神经分支，这促使我们研究雪貂口鼻部触须的神经支配。采用还原银技术制备切片，并进行连续重建以进行分析。雪貂感觉末梢的类型和方向与灵长类动物中所描述的相似。然而，我们发现任何终末神经分支都可能由全套传入类型组成，因此不存在一致的分隔现象。本文讨论了这些结果对发育过程中传入神经与靶标特异性以及对多个皮层表征的影响。
