Abstract
Model calculations are presented for several properties of development in the retinotectal projection of amphibians and fishes, using the Gierer-Meinhardt equations. It has been assumed that the connections between retinal and tectal cells were made on the correspondence of positional information which were given by the monotonic function of the specific activator concentration in each cell-array.
The monotonic distributions of the activator and the existence of the critical period were shown by computer simulation, both in the proliferating retina and tectum. Several variances of the retinotectal projection after surgical experiments have also been explained.
