Figure 6.

TC contacts are slightly more proximal to the soma than CC contacts. A, Between 6% and 15% of contacts are TC in fully reconstructed dendritic arbors (stacked histogram: green, TC; red, CC; number, fraction of total spines that are TC; star, star pyramid, all others are spiny stellate; S, septal neuron, all others are barrel). B, Top, TC (green) and CC (red) spine density for one cell (cell 3, shown in Fig. 4). Bottom, Ratio of TC to CC spines declines as a function of distance from the cell soma. C, Average of all fully reconstructed cells. Error bars indicate SE. D, Spines in cell 6 were classified as mushroom (left), stubby (middle), or filopodium (right); diagram is denoted on the x-axis. The fraction of TC contacts was approximately equal across all three classes of spines (legend same as in A).