cell type on/off mea.ecc. farea drad drad ddia marea marea/ syn/ 100 sq. total cone den. cone den. total syn/cone name a/b layer deg. sq.mic. mic. deg. mic. sq.mic. farea um farea synapses per sq mm per sq um cones in farea a18 a on 8.2 1.35E+05 207 0.94 415 1.92E+04 0.14 2 2112 10000 0.01 1350 2 a1deg a on 1 1.64E+04 72 0.33 145 5100 0.31 3 561 24200 0.0242 397 1 a25 a on 4.5 7.08E+04 150 0.68 300 1.56E+04 0.22 2 1716 15000 0.015 1062 2 a2a-b a off 9.5 2.16E+05 262 1.19 524 3.75E+04 0.17 2 4125 10000 0.01 2160 2 b19 b on 9.1 8.16E+03 51 0.23 102 6166 0.76 21 1726 10000 0.01 82 21 b3 b on 13.6 7.78E+03 50 0.23 100 4441 0.57 16 1243 8000 0.008 62 20 b4 b on 1 533 13 0.06 26 585 1.10 31 164 24200 0.0242 13 13 b43 b on 1 600 14 0.06 28 536 0.89 25 150 24200 0.0242 15 10 b7 b on 1 444 12 0.05 24 572 1.29 36 160 24200 0.0242 11 15 b9 b on 21.3 2.23E+04 84 0.38 169 6554 0.29 8 1835 6000 0.006 134 14 b32 b off 14.5 1.19E+04 62 0.28 123 5685 0.48 13 1592 8000 0.008 95 17 boff b off 1 578 14 0.06 27 502 0.87 24 141 24200 0.0242 14 10