Kirzinger A, Jürgens U
German Primate Centre, Göttingen.
J Hirnforsch. 1994;35(4):559-65.
In seven squirrel monkeys (Saimiri sciureus), horseradish-peroxidase injections were made into a number of extralaryngeal muscles shown to be involved in vocal control. Retrogradely labeled motoneurones were found in the case of the strap muscles from a position ventrolateral to the caudal hypoglossal nucleus down into the ventral horn of C2. The thyrohoid muscle was represented most rostrally, the sternothyroid most caudally; the sternohyoid took an intermediate position. There was partial overlap between sternothyroid and sternohyoid motoneurones. The thyrohyoid motoneurones were located not only rostrally but also laterally to the sternohyoid motoneurones. Omohyoid motoneurones overlapped with those of the sternohyoid and sternothyroid in the caudal medulla; in the cervical cord, they were located laterally to them. Inferior pharyngeal constrictor motoneurones were found in the nucl. retrofacialis and rostral nucl. ambiguus. Mylohyoid and anterior digastric motoneurones were restricted to the medialmost part of the trigeminal motor nucleus, with the mylohyoid being represented ventrally to the anterior digastric.
在7只松鼠猴（松鼠猴属）中，将辣根过氧化物酶注射到一些已证明参与发声控制的喉外肌中。在带状肌的情况下，从尾侧舌下神经核腹外侧的位置向下至C2腹角发现了逆行标记的运动神经元。甲状舌骨肌在最靠前的位置有代表，胸骨甲状肌在最靠后的位置；胸骨舌骨肌处于中间位置。胸骨甲状肌和胸骨舌骨肌的运动神经元之间存在部分重叠。甲状舌骨肌的运动神经元不仅位于胸骨舌骨肌运动神经元的前方，还位于其外侧。肩胛舌骨肌的运动神经元在延髓尾端与胸骨舌骨肌和胸骨甲状肌的运动神经元重叠；在颈髓中，它们位于这些运动神经元的外侧。咽下缩肌的运动神经元在面神经后核和吻侧疑核中被发现。二腹肌前腹和颏舌骨肌的运动神经元局限于三叉神经运动核的最内侧部分，颏舌骨肌位于二腹肌前腹的腹侧。
