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首页> 外文期刊>Experimental Brain Research >Projections of the ventrolateral pontine vocalization area in the squirrel monkey.
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Projections of the ventrolateral pontine vocalization area in the squirrel monkey.

机译：松鼠猴腹侧脑桥发声区域的投影。

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摘要

In four squirrel monkeys (Saimiri sciureus), the tracer biotin dextranamine (BDA) was injected into the ventrolateral pons at a site at which injection of the glutamate antagonist kynurenic acid blocked vocalization electrically elicited from the periaqueductal gray (PAG). Anterograde projections could be traced into all cranial motor and sensory nuclei involved in phonation, that is, the nucleus ambiguus, facial, hypoglossal and trigeminal motor nuclei, the motorneuron column in the ventral gray substance innervating the extrinsic laryngeal muscles, the nucleus retroambiguus, solitary tract and spinal trigeminal nuclei. Projections were also found into a number of auditory nuclei, namely the nucleus cochlearis-complex, superior olive, ventral and dorsal nuclei of the lateral lemniscus and inferior colliculus. Furthermore, there were projections into the reticular formation of the lateral and dorsocaudal medulla and lateral pons, into nucleus gracilis, inferior and medial vestibular nuclei, lateral reticular nucleus, ventral raphe, pontine gray, superior colliculus, PAG and mediodorsal thalamic nucleus. Injection of the tracer wheat germ agglutinin-conjugated horseradish peroxidase into the ventrolateral pontine vocalization-blocking area in one animal yielded retrograde labeling throughout the PAG. Injection of BDA into a vocalization-eliciting site of the PAG in another animal yielded projections into the ventrolateral pontine vocalization-blocking area. It is concluded that the ventral paralemniscal area in the ventrolateral pons represents a relay station of the descending periaqueductal vocalization-controlling pathway.
机译：在四只松鼠猴（Saimiri sciureus）中，将示踪剂生物素右旋糖胺（BDA）注射到腹侧脑桥的某个位置，在该位置注射谷氨酸拮抗剂强尿嘧啶酸会阻断从导水管周围灰色（PAG）电诱发的发声。顺行性投射可以追溯到涉及发声的所有颅神经运动和感觉核，即，模糊核，面部，舌下和三叉神经运动核，腹侧灰色物质中的运动神经元柱支配外喉咽肌，髓核后核，听神经核。道和脊柱三叉神经核。在许多听觉核中也发现了突起，即耳蜗复合核，外侧双侧圆叶和下丘的上橄榄核，腹核和背核。此外，在外侧和背尾髓的网状结构以及外侧脑桥的网状结构中，还有突触核，前庭内侧和内侧前庭核，网状外侧核，腹沟，桥脑灰，上丘，PAG和中腹丘脑核。将示踪小麦胚芽凝集素缀合的辣根过氧化物酶注射入一只动物的腹侧脑桥发声阻滞区域会在整个PAG中产生逆行标记。将BDA注射到另一只动物的PAG的发声诱发位点后，投射到腹侧脑桥发声阻滞区域。结论是，腹侧脑桥的腹旁旁区是降周水管发声控制路径的中继站。

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