PROJECTIONS OF AUDITORY-CORTEX UPON THALAMUS AND MIDBRAIN IN OWL MONKEY
PROJECTIONS OF AUDITORY-CORTEX UPON THALAMUS AND MIDBRAIN IN OWL MONKEY
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DOI：
10.1002/cne.901770402
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发表时间：
1978-01-01
影响因子：
2.5
通讯作者：
IMIG, TJ
中科院分区：
文献类型：
--
作者：
FITZPATRICK, KA;IMIG, TJ
两个按音调组织的皮层区域，即初级 (AI) 和喙 (R) 区域，构成了鸮猴 [Aotus trivirgatus] 听觉皮层的核心。将氚化脯氨酸注射到每个视野中，以使用放射自显影方法确定它们的传出投影。 PAI 和 R 投射到内侧膝状体的主要细胞和大细胞分裂。 R 还投射到内侧膝状体背侧部分的后部。 AI 将轴突发送至下丘中央核的背内侧区域和层状部分。 AI 注射后中央核中的标记显示为平行于等频轮廓的银颗粒带。 R 的轴突终止于下丘中央核的背内侧区域以及下丘的中央周围核和外部核。吻侧区还投射到上丘肱骨前面的内侧丘脑的一小部分区域。
Two tonotopically organized cortical fields, the primary (AI) and the rostral (R) fields, comprise the core of auditory cortex in the owl monkey [Aotus trivirgatus]. Injections of tritiated proline were made into each of these fields to determine their efferent projections using autoradiographic methods. PAI and R project to the principal and magnocellular divisions of the medial geniculate body. R also projects to the posterior part of the dorsal division of the medial geniculate. AI sends axons to the dorsomedial region and laminated portion of the central nucleus of the inferior colliculus. Labeling in the central nucleus following AI injections appears as a band of Ag grains oriented parallel to isofrequency contours. Axons from R terminate in the dorsomedial region of the central nucleus of the inferior colliculus and in the pericentral and external nuclei of the inferior colliculus. The rostral field also projects to a small area of the medial pulvinar just anterior to the brachium of the superior colliculus.