Figure 1 of Porciatti, Mol Vis 2010; 16:2939-2947.


Figure 1. Pattern electroretinogram (PERG) phenotype in C57BL/6J and DBA/2J mice. Grand-average waveforms of maximal pattern electroretinograms recorded in different mouse strains at 2–4 months of age (n=6 for each strain) in response to reversing gratings (temporal frequency 1 Hz, spatial frequency 0.05 cycles/deg, contrast 1.0). For all waveforms, the continuous black line represents the grand average, and the superimposed dotted and dashed lines represent the ±standard error of the mean. In the idealized waveform (right panel), the upward arrow represents the amplitude of the positive peak with latency of 90–120 ms (P100), the downward arrow represents the amplitude of the negative trough with latency of 200–300 ms (N 250), and the horizontal arrow represents the implicit time of the P100 component.