Figure 1.

The effects of melatonin (MT) on increased I_Na densities induced by exposure to extremely low-frequency electromagnetic field (ELF-EMF). (A) Superimposed I_Na evoked by a 20-msec. depolarizing pulse from a holding potential 100 to −20 mV. Current traces were obtained from cerebellar granule cells exposed to 1 mT ELF-EMF for 60 min. in the presence or absence of MT (1 and 5 μM). (B) Statistical analysis of the effects of MT on increased I_Na densities induced by exposure to ELF-EMF. The data are reported as the means ± SEM from 16 to 25 cells. *P < 0.05 compared with control (non-ELF-EMF) using Student's t-test. #P < 0.05 compared with the corresponding ELF-EMF control (without MT) using Student's t-test.