Figure 5.

Effect of colchicine on SOs and mechanoelectrical transduction. (a–d) SOs before and after injection of colchicine. Amplitude spectrum of the displacement of the flagellum before (black) and 10 min after (grey) injection of colchicine solution (a,b) and colchicine-free solution (c,d). Sharp peaks at 700 (d) or 800 Hz (a–c) corresponds to a calibrating vibration of 1 (b,c) or 2 nm (a,d) in amplitude. Other sharp peaks in these recordings are electrical noise and pickup. (e) Electrical response of the JO to a pure tone presented between 0.2 and 0.6 s at an intensity of 1 × 10⁻⁴ ms⁻¹ at 300 Hz before and after injection of colchicine.