Harris W A
J Comp Neurol. 1980 Nov 15;194(2):319-33. doi: 10.1002/cne.901940204.
Eye primordia from the Mexican axolotl or the California newt were transplanted into hosts of either species. These "third" eyes often developed an optic nerve that penetrated the host brain and made one of three central projections: bilateral to the dorsal thalami, tecta, and basal optic nuclei; ipsilateral to the same areas; or ipsilateral into the cord. The type of projection made by a transplanted eye seemed to depend on where its nerve first entered the brain. The optic fibers that reached the visual centers of the midbrain were organized retinotopically in the optic tectum and mediated visually-guided behavior.
将墨西哥钝口螈或加州蝾螈的眼原基移植到这两个物种中的任何一个的宿主中。这些“第三只”眼睛通常会发育出一条穿透宿主大脑的视神经，并形成三种中枢投射之一：双侧投射到背侧丘脑、顶盖和基底视核；同侧投射到相同区域；或同侧投射到脊髓。移植眼所形成的投射类型似乎取决于其神经最初进入大脑的位置。到达中脑视觉中枢的视神经纤维在视顶盖中按视网膜拓扑结构排列，并介导视觉引导行为。
