FIG. 1.

Exemplar electrode stimulation patterns for burst (left column) and spread (right column) mode stimuli are shown for a compound stimulus with five electrodes. Each vertical line represents a biphasic stimulation pulse. The three rows show examples of 100, 300 and 600 pps stimuli, respectively, with 100, 300 and 600 pps signals represented by these five-electrode stimuli appearing at the top of the panels. T defines one signal period, which is 10 ms in the pulse trains in the top row. Burst mode stimuli occur at the beginning of a signal period, while spread mode stimuli are spread across a signal period. The bold horizontal bars indicate the duration of a stimulus sweep relative to one period of the signal.