Fig. 7. Percentage of MAT-LyLu cells crossing a criterion boundary 200 µm (P_c) from the original position occupied just before turning the electric field (EF) on. The first three bars from the left-hand side represent the various control conditions without electric field: Ctrl, control (with no field or pharmacology); TTX, 1 µM tetrodotoxin (TTX); VER, 10 µM veratridine (VER). The fourth bar shows data for application of electric field alone. The bars next on the right represent values of P_c for cells moving in the electric field in the presence of various concentrations of TTX or VER. Concentrations: TTX1, 1 µM; TTX2, 2.5 µM; TTX3, 5 µM; VER1, 1 µM; VER2, 5 µM; VER3, 10 µM. Each mean value was calculated from three or four separate experiments. Error bars represent s.e.m.