Wild J M
Brain Res. 1987 Jun 2;412(2):205-23. doi: 10.1016/0006-8993(87)91127-9.
In order to establish the basic connectivity of physiologically identified somatosensory regions of the thalamus and telencephalon in the pigeon, injections of wheatgerm agglutinin-horseradish peroxidase were made under electrophysiological control and the projections were charted following conventional neurohistochemistry. The physiological recordings generally confirmed the findings of Delius and Bennetto (Brain Research, 37 (1972) 205-221) of somatosensory sites within the dorsal thalamus, anterior hyperstriatum and caudomedial neostriatum, and the anatomical results show that the thalamic cells of origin of the projections to the two telencephalic regions are largely separate: a rostral cell group comprising nucleus dorsalis intermedius ventralis anterior projects to the anterior hyperstriatum accessorium (HA), whilst a caudal cell group comprising caudal regions of nucleus dorsolateralis posterior (DLP) projects to the medial neostriatum intermedium and caudale (NI/NC). Caudal DLP is also the origin of a visual projection to NI/NC, and its terminal field also approximates that of the thalamic auditory nucleus ovoidalis. Since the anterior HA and NI/NC were here shown to be reciprocally connected, there is a possibility of multimodal input to both telencephalic regions. HA was also further defined as the origin of the basal branch of the septomesencephalic tract, and hence potentially provides an outlet for both telencephalic somatosensory regions. The results are discussed within a comparative context.
为了确定鸽子丘脑和端脑生理上确定的体感区域的基本连接性，在电生理控制下注射了麦胚凝集素-辣根过氧化物酶，并按照传统神经组织化学方法绘制了投射图。生理记录大体上证实了德利乌斯和贝内托（《脑研究》，37卷（1972年）205 - 221页）关于背侧丘脑、前纹状体和尾内侧新纹状体内体感位点的研究结果，解剖学结果表明，投射到这两个端脑区域的丘脑起源细胞群在很大程度上是分开的：一个由背侧中间腹侧前核组成的吻侧细胞群投射到副前纹状体（HA），而一个由背外侧后核（DLP）尾侧区域组成的尾侧细胞群投射到中间和尾侧内侧新纹状体（NI/NC）。尾侧DLP也是投射到NI/NC的视觉投射的起源，其终末场也与丘脑听觉核卵圆核的终末场相近。由于此处显示前HA和NI/NC相互连接，这两个端脑区域都有可能接受多模式输入。HA还被进一步确定为隔中脑束基底支的起源，因此可能为两个端脑体感区域提供一个输出途径。将在比较的背景下讨论这些结果。
