Figure 3

(a) Stimulus-response plots showing amplitudes of the dark-adapted ERG a-wave recorded from the WT and MPS IIIB mice at the 28th and the 46th week. The dotted lines denote the approximate threshold for cone photoreceptors based on reported data from suction-electrode recording of outer segments67,68. (b) Amplitudes of the cone a-wave. Data points and error bars represent mean values and standard errors, respectively. *Statistically significant difference between groups, p < 0.05, unpaired t-test.