Fig. (9).

Eye competition in layer 3/4 of the binocular visual cortex. On the left side is illustrated the normal situation when the two eyes are competing during the critical period (CP). In the mouse the contralateral eye (C, green) is dominant and occupies more space than the ipsilateral eye (I, red) in layers 3/4 of the binocular visual cortex. The right side illustrates the shift in ocular dominance when the contralateral eye is closed during CP. This shift does not take place if the eye is closed before CP opening or after CP closure.