Fig. 2. The increase of the magnocellularis response with the intensity of the test stimuli or the conspecific-generated EOD shows that the low-responsiveness window is not an all-or-none phenomenon. (A) Amplitude of the magnocellularis nucleus responses to artificial test stimuli of different intensities as a function of the delay between the self-generated EOD and the test stimuli. The responses are expressed as a percentage of the maximal response evoked by the self-generated EOD. (B,C) Superimposed traces triggered by the self-generated EOD obtained in a fish chronically implanted in the magnocellularis nucleus, showing several responses evoked by the conspecific-generated EOD of a fish of similar length (13 cm) placed antiparallel (B) 6 cm and (C) 3 cm away.