Table 1.

Image volumes and analysis^a

Postnatal day	Tissue dimensions (μm)	Pixel size (nm)	Tissue volume (μm3)	Number of cells analyzed	Number of cells in volume
2	124.8	5.7	965,473	21	71
3	96 × 84 × 50.2	12.0	404,813	37	37
4	80 × 80 × 59.9	10.0	383,360	18	18
6	98 × 78.4 × 68	4.9	522,458	43	43
9	153.6 × 115.2 × 59.2	4.8	1,047,527	66	66

^aDimensions are formatted as width × height × depth. Pixel dimensions reported as one side of a square pixel. Cells were considered to be within the volume if all portions of the cell body, nucleus, and identified inputs were completely enclosed within the volume. Of the 185 cells analyzed, 57 of these cells were qualitatively determined to have a single dominant input (P9) and the remaining 128 cells were quantitatively analyzed using ASA.