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Table 2 FVEP amplitudes and times-to-peaks in ten horses with the active electrode at Pz-45

From: Visual evoked potentials in the horse

   Time-to-peak (ms) Peak-to-peak amplitude (μV)
Horse Eye P1 N1 P2 N2a P3 N2 P4 P5 N1-P2 P2-N2 N2a-P3 N2-P4
A OD 13 ± 1.4 28 ± 1.2 59 ± 2.0 124 ± 3.5 137 ± 8.7 150 ± 4.6 273 ± 8.6 Missing 9.6 ± 1.0 11.9 ± 1.8 2.5 ± 1.2 8.4 ± 2.9
B OS 12 ± 3.5 26 ± 1.1 54 ± 2.3 113 ± 4.2 123 ± 3.5 145 ± 8.8 218 ± 13.8 373 ± 31.4 7.4 ± 0.7 15.7 ± 3.6 0.4 ± 0.1 13.5 ± 4.9
C OD 14 ± 0.1 28 ± 1.0 62 ± 2.5 104 ± 4.1 125 ± 5.6 153 ± 7.5 207 ± 13.8 354 ± 15.8 6.1 ± 1.2 5.9 ± 1.4 1.5 ± 1.0 3.7 ± 1.1
D OS 18 ± 1.0 25 ± 2.0 47 ± 1.5 87 ± 12.0 107 ± 10.0 138 ± 8.8 200 ± 15.3 260 ± 7.2 2.2 ± 0.8 4.5 ± 1.0 1.5 ± 1.0 4.5 ± 1.1
E OD 16 ± 3.5 29 ± 0.1 55 ± 4.0 99 ± 1.4 116 ± 2.8 153 ± 6.8 234 ± 24.6 375 ± 10.2 3.8 ± 1.5 4.6 ± 1.4 2.9 ± 1.1 4.5 ± 1.5
F OS 12 ± 2.3 27 ± 1.4 54 ± 4.6 105 ± 4.6 122 ± 7.6 148 ± 6.4 213 ± 18.2 361 ± 26.2 7.3 ± 1.8 13.8 ± 3.9 0.4 ± 0.3 11.1 ± 3.7
G OS 17 ± 1.2 30 ± 2.7 58 ± 3.0 104 ± 22.2 111 ± 18.9 137 ± 5.5 213 ± 13.3 355 ± 30.3 2.6 ± 0.6 6.2 ± 1.2 2.8 ± 4.7 8.3 ± 2.5
H OD 20 ± 1.1 32 ± 5.9 57 ± 4.0 84 ± 28.9 95 ± 27.0 133 ± 7.9 202 ± 13.7 337 ± 32.7 2.5 ± 0.5 5.7 ± 1.5 0.9 ± 0.4 8.0 ± 2.6
I OS 12 ± 3.1 17 ± 3.5 48 ± 2.2 103 ± 6.2 110 ± 8.2 130 ± 3.0 193 ± 7.1 305 ± 12.1 1.8 ± 0.2 3.5 ± 0.7 0.2 ± 0.1 4.5 ± 0.7
J OD 6 ± 2.6 22 ± 5.9 52 ± 4.8 94 ± 12.5 107 ± 12.9 140 ± 6.8 206 ± 20.0 347 ± 19.8 2.2 ± 0.6 5.0 ± 1.5 4.8 ± 1.5 4.8 ± 1.7
95 % CI   12–14 26–28 55–57 99–105 113–120 137–142 213–224 324–345 4.3–5.5 6.1–7.8 1.3–2.3 5.9–7.4
  1. A minimum of 5 recordings (144 averaged responses each) are included from each horse
  2. Data are shown as means ± SDs