Table 3.

Comparison of LGN axon-patch density across different animals: primates, carnivores, scandentia, and rodents. Column 1 is taken from references cited below. Column 2 is calculated as the square root of column 1 times 1000; column 3 is calculated as column 8 in Table 1 divided by column 1 in this table; column 4 is calculated as column 6 in Table 1 times column 1 in this table times one million and divided by column 8 in Table 1; column 5 is calculated as the square root of the ratio between column 6 of Table 2 and column 1 of this table. Columns are numbered from left to right as in Table 1. Macaque: (Blasdel and Lund 1983) for [1]. Cat(area 17): (a) for [1]. Tree shrew: (Raczkowski and Fitzpatrick 1990) for [1]. Mouse: (Antonini, Fagiolini et al. 1999) for [1]. RF: receptive field.

Animal	LGN-axon-patch area (mm2)	LGN-axon-patch spread (microns)	Non-overlapping LGN axon-patches per mm2 of V1	Overlapping LGN axon-patches per V1 point	LGN axon-patch spacing per LGN RF
Macaque	0.23	480	5,170	251	1.5
Cat	0.75	866	507	1,007	1.9
Tree Shrew	0.08	283	825	121	2.1
Mouse	0.24	490	17	1,200	0.6