Figure 13.

Schematic diagram of results. Diagram of prism-induced changes in contact clustering within the adaptive zone. For simplicity, contacts are shown onto a single neuron. Dendrites are depicted as gray cylinders, and axodendritic contacts are depicted as red dots. The right space zone in normal juveniles (top) exhibits both short-range (<20 μm) and longer-range (>20 μm) contacts. Three models are presented to account for the prism-induced disappearance of widely spaced contacts in the corresponding adaptive zone of prism owls: one dependent solely on the formation of new contacts (bottom left), one dependent solely on contact elimination (bottom middle), and one dependent on both formation and elimination (bottom right). The locations of contact changes are delineated with green arrows. Only the latter model is consistent with the data.