Fig. 6.

Camera lucida reconstruction of injected P0 pyramidal cells grouped accordingly to their synaptic properties. The neurons not represented here are shown in Figure8A. Silent cells are shown ingreen, GABA-only in red, and neurons with GABA and NMDA or GABA plus NMDA plus AMPA receptor-mediated PSCs are inblack and blue, respectively. Note that each group of cells has a relative homogenous degree of maturation. GABA-active and GABA plus glutamate-active neurons differ essentially by the presence of an apical dendrite in the stratum lacunosum moleculare. Note also that there are no morphological differences between GABA plus NMDA and GABA plus NMDA plus AMPA-active cells.