Fig. 4

Reduced amplitude and delayed implicit time of oscillatory potentials (OPs) were found in db/db mice. a The representative OPs waveforms recorded at + 0.3 log cd·s/m² of db/+ (grey) and db/db (blue) mice at 25 weeks of age. Arrows indicating the peaks of OP1 to OP4 of the db/+ mice. b–e Bar charts showing the mean amplitudes and implicit times of OP1 to OP4 and of the db/+ mice (n = 14) and db/db mice (n = 11) at 9 and 25 weeks. Data presented as mean ± SEM. Independent sample t-test: *P < 0.05, **P < 0.01, ***P < 0.001