REPRESENTATION OF VISUAL-FIELD IN INFERIOR NUCLEUS OF PULVINAR IN OWL MONKEY (AOTUS-TRIVIRGATUS)
REPRESENTATION OF VISUAL-FIELD IN INFERIOR NUCLEUS OF PULVINAR IN OWL MONKEY (AOTUS-TRIVIRGATUS)
复制标题
DOI：
10.1016/0006-8993(72)90135-7
复制
发表时间：
1972-01-01
期刊：
影响因子：
2.9
通讯作者：
LANE, RH
中科院分区：
文献类型：
--
作者：
ALLMAN, JM;KAAS, JH;LANE, RH
对哺乳动物大脑的比较解剖学的研究表明，很少有像灵长类动物丘脑丘脑区域的扩张那样引人注目的发展。然而，我们对该区域功能组织的了解非常有限，以至于丘脑被称为“丘脑的未知领域”。长期以来，人们一直怀疑枕丘的部分在接近脑干已知视觉中心（外侧膝状核和上丘）的基础上介导视觉功能，直接视网膜连接的早期建议（参见参考文献 27，第 154-155 页）以及临床病例的推论。尽管消融实验尚未揭示枕窝损伤后的主要视觉缺陷，但最近的许多解剖学报告清楚地表明枕窝部分与视觉功能有关。现在看来，正如罗斯和伍尔西所定义的，枕丘的一部分是外在的，因为它接收到来自上丘的投射。此外，部分枕骨投射到枕叶和颞叶皮层区域，现在有解剖学、电生理学和行为学证据表明这些枕叶和颞叶皮层区域涉及视觉功能。最后，最近报道了松鼠猴和丛林宝宝的下丘脑的光诱发反应。鉴于有证据表明部分枕垫具有视觉功能，本研究的目的是确定枕垫的部分是否具有视觉组织性。在本研究中，电生理测绘揭示了视野的地形表征的证据，该视野与结构实体（下丘脑）共同延伸。这一结果与最近的一份报告密切一致，即猕猴的纹状皮层在地形上投射到下丘脑上。
The study of the comparative anatomy of mammalian brains reveals few developments as striking as the expansion in primates of that region of the thalamus referred to as the pulvinar; yet our knowledge of the functional organization of this region is so limited that the pulvinar has been termed the'terra incognita of the thalamus'. Portions of the pulvinar have long been suspected of mediating visual functions on the bases of proximity to the known visual centers of the brain stem (the lateral geniculate nucleus and the superior colliculus), early suggestions of direct retinal connections (see ref. 27, pp. 154-155), and deductions from clinical cases. Although ablation experiments have not revealed major visual deficits after pulvinar lesions, portions of the pulvinar are clearly implicated in visual functions by a number of recent anatomical reports. It now appears that part of the pulvinar is extrinsic, as defined by Rose and Woolsey, since it receives a projection from the superior colliculus. In addition, parts of the pulvinar project to occipital and temporal areas of cortex and there is now anatomical, electrophysiological and behavioral evidence which indicates that these occipital and temporal cortical areas are involved in visual functions. Finally, photic evoked responses in the inferior pulvinar of the squirrel monkey and bush baby have been recently reported. In view of the evidence that parts of the pulvinar are visual in function, the object of the present investigation was to determine whether portions of the pulvinar are visuotopically organized. In the present study, electrophysiological mapping has revealed evidence for a topographic representation of the visual field which is coextensive with an architectonic entity, the inferior pulvinar. This result is in close correspondence with a recent report that the striate cortex projects topographically onto the inferior pulvinar in the macaque monkey.