Peterson E H, Rowe M H
Brain Res. 1980 Nov 10;201(1):195-201. doi: 10.1016/0006-8993(80)90785-4.
We have described a population of neurons in the retinal of a shark, Heterodontus francisci, which is precisely aligned within the inner plexiform layer (IPL) and which differs from neurons in the ganglion cell layer (GCL) in soma size and topographical distribution. GCL neurons are relatively small and form a horizontally oriented visual streak; IPL neurons are significantly larger and form a circular specialization in the far temporal retina. Thus, it appears that there are two distinct retinal specializations in Heterodontus: one subserving frontal vision and one which provides a panoramic view of the lateral visual field.
我们描述了鲨鱼（豹纹鲨）视网膜中的一群神经元，它们在内网状层（IPL）中精确排列，并且在细胞体大小和地形分布上与神经节细胞层（GCL）中的神经元不同。GCL神经元相对较小，形成水平方向的视觉条纹；IPL神经元明显较大，在远颞侧视网膜中形成圆形特化结构。因此，似乎豹纹鲨存在两种不同的视网膜特化结构：一种用于前方视觉，另一种用于提供侧视野的全景视图。
