Meyer G, González-Hernández T H, Ferres-Torres R
Dpto. de Anatomíca, Facultad de Medicina, Universidad de La Laguna, Tenerife, Spain.
Neuroscience. 1989;33(3):489-98. doi: 10.1016/0306-4522(89)90401-6.
The spiny stellate neurons have been studied by the Golgi method in the auditory koniocortex and parakoniocortex of man. Spiny stellate cells are a consistent though not very common component of layer IV. They are not confined to specific sublayers but occur at all depths of layer IV, and also in layer IIIc. Spiny stellate cells in the auditory areas show a great variety of their dendritic arborization pattern. The presence of all intermediate forms between small pyramidal cells--which constitute the dominant cell type in layer IV and which display an extraordinary heteromorphism--and spiny stellate cells shows the close kinship between both neuronal types. The morphology and distribution of spines along the dendrites of spiny stellate neurons are similar to those of the small pyramidal cells of the same layer. The axons, which were impregnated only in their proximal portions, mostly descend, giving rise to recurrent ascending collaterals, but initially ascending axons do also occur. Spiny stellate neurons are present in the different cytoarchitectonic areas examined, and thus they are not confined to the auditory koniocortex.
利用高尔基染色法，对人类听觉的颗粒皮质和旁颗粒皮质中的棘状星状神经元进行了研究。棘状星状细胞是IV层中一种常见但不太普遍的成分。它们并不局限于特定的亚层，而是出现在IV层的各个深度，以及IIIc层。听觉区域的棘状星状细胞呈现出多种多样的树突分支模式。在IV层中占主导地位且表现出异常多形性的小锥体细胞与棘状星状细胞之间存在各种中间形式，这表明这两种神经元类型之间存在密切的亲缘关系。棘状星状神经元树突上棘的形态和分布与同一层的小锥体细胞相似。轴突仅在其近端部分被染色，大多向下延伸，发出返回的上升侧支，但也有最初向上的轴突。在所检查的不同细胞构筑区域均存在棘状星状神经元，因此它们并不局限于听觉颗粒皮质。
