Overlapping connections of multiple spinal motor neurons onto multiple muscle cells is sorted out after birth.
Many cells are binocular unless purturbed to mediate stereopsis.
Just 6 days of monocular deprivation right around one month of age has this effect. There are columns early which get reinforced during early development. In the experiment shown here, replacing activity in a synchronous way would maintain normal binocularity while asynchrouous optic nerve stimulations would let binocularity disappear. Thus alterations are activity dependent. The nice thing is that there are big identified cells.