Combined current clamp and displacement data for a cell. A: Concurrent action potential and displacement signal, integrated with respect to time from the movement data obtained from the video data, are plotted in the same figure. The action potential data is shown in red and the movement data in black. For current clamp data, the potential in mV is shown, whereas for movement data, the y-axis is arbitrary. B: Image from the video data used for the analysis of a CM being recorded with current clamp. C: An enlarged part of the signal showing the time difference between the action potential and the displacement signal.