Table 1.

ERG response properties from isolated retinas across postnatal development of normal-reared (nr) and dark-reared (dr) animals

A-wavesSTFB-waves
Dim flash response properties(hv µm2)(P*)
Condition Contribution n Rmax(µV) Rdim(µV) tpeak(ms) τrec(ms) tint(ms) I1/2(hv µm−2) A (s−2) A (s−2) A1/2(µV) n Rmax(µV) I1/2(hv µm−2) 
P8 (nr) Rods/cones 10 7 ± 0.7 4.1 ± 0.3 59 ± 6.8 751 ± 145 195 ± 15 921 ± 2,413 16 ± 4.5 135 ± 39 − − − − 
P8 Gnat1−/− Cones 2.7 ± 1.1 0.9 ± 0.3 306.5 ± 153.3 82.1 ± 30.9 257.3 ± 30.4 30,531.8 ± 22,646 − − − − − − 
P9 (nr) Rods/cones 14 ± 2.9 4.8 0.5 116 ± 24 271.45 ± 43 178 ± 23 408 ± 335 6.7 ± 1.8 44 ± 12 − − − 
P10 (nr) Rods/cones 12 61 ± 11 13 ± 2.4 147 ± 17 206 ± 26 234 ± 20 55 ± 12 20 ± 3.4 96 ± 16 − 90 ± 52 27 ± 12 
P10 (nr) Cones 5 ± 1.4 5.2 ± 1.1 43 ± 4.5 129 ± 34 146 ± 29 10,402 ± 2,578 0.024 ± 0.005 0.31 ± 0.06 − 10 ± 3.1 12,711 ± 1,835 
P10 Gnat1−/− Cones 16 13.9 ± 4.7 4.1 ± 1.5 332.3 ± 45.7 257.3 ± 89.6 302.1 ± 21.5 27,841 ± 18,600 − − − − − − 
P14 (nr) Rods 12 258 ± 21 46 ± 10 177 ± 20 183 ± 20 204 ± 17 183 ± 12 16 ± 5.7 48 ± 17 17.1 ± 2.6 12 754 ± 58 6 ± 3.0 
P14 (dr) Rods 12 216 ± 45 56 ± 10 222 ± 22 228 ± 28 301 ± 34 145 ± 16 22 ± 5.0 69 ± 15 32.9 ± 9.2 12 743 ± 71 6 ± 2.8 
P14 (nr) Cones 12 28 ± 3.0 9.1 ± 8.8 68 ± 4.5 68 ± 0.3 60 ± 16 11,229 ± 494 0.6 ± 0.1 7.3 ± 1.6 23.2 ± 3.2 12 110 ± 8.9 16,625 ± 2,382 
P14 Gnat1−/− Cones 11 14.6 ± 3.7 4.1 ± 1.3 296.5 ± 55.8 980.7 ± 565.6 370.4 ± 35.2 7,023 ± 2,577 − − − − − − 
P14 (dr) Cones 11 34 ± 3.4 11 ± 1.2 64 ± 3.4 65 ± 8.9 64 ± 3.4 10,321 ± 752 0.9 ± 0.2 12 ± 3.2 26.1 ± 8.0 11 65 ± 6.8 8,903 ± 1,457 
Adult (nr) Rods 14 368 ± 23 77 ± 8.7 237 ± 16 269 ± 31 351 ± 30 186 ± 8.1 7.5 ± 1.3 14 ± 2.4 7.4 ± 2.7 10 1,719 ± 189 13 ± 2.9 
Adult (dr) Rods 14 381 ± 23 80 ± 28 196 ± 13 236 ± 56 293 ± 23 151 ± 7.4 10 ± 2.4 19 ± 4.4 4.0 ± 1.5 14 1,864 ± 92 15 ± 5.3 
Adult (nr) Cones 10 49 ± 6.1 18 ± 2.6 64 ± 2.4 61 ± 0.2 94 ± 14 13,328 ± 914 0.7 ± 0.3 9.4 ± 3.7 15.7 ± 4.1 269 ± 31 33,447 ± 5,935 
Adult Gnat1−/− Cones 37.2 ± 4.5 11.7 ± 1.9 147.0 ± 17.9 205.9 ± 42.4 284.8 ± 19.9 10,474 ± 5,105 − − − − − − 
Adult (dr) Cones 16 39 ± 3.7 9.2 ± 2.8 90 ± 7.8 97 ± 14 118 ± 10 73,800 ± 17,295 0.2 ± 0.03 2.1 ± 0.4 33.3 ± 3.7 18 78 ± 8 24,003 ± 2,979 

All values represent the mean ± SEM. Non-applicable parameter measurements and parameters not measured are represented by −.

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