Figure 3. Contrast transfer function of
pattern electroretinogram (PERG) amplitude (
A,
B) and
latency (
C,
D) for different mouse strains. All
responses have been obtained at a fixed spatial frequency of 0.05
cycles/deg and temporal frequency of 1 Hz. In all panels, symbols
represent the mean±standard error of the mean (n=6 mice for each
strain). Amplitude and latency changes are expressed in relative units
compared to the maximal PERG in response to gratings of 0.05
cycles/degree and contrast of 1.0 reversing at 1 Hz, corresponding
waveforms of which are shown in
Figure 1.