FIG. 12.

Monopolar and bipolar activation widths were comparable for equal peak spike rates in cats. A At equal dB SL, monopolar stimuli produced broader onset activation widths than bipolar stimuli (medians shown for 31 total stimulus channels in eight cats). B When compared at equal peak spike rates, monopolar, and bipolar stimuli produced nearly equal onset activation widths. C and D Paired differences (medians and interquartile ranges) for the monopolar and bipolar onset activation widths shown in A and B. E–F Activation widths and paired differences for the sustained time window. When compared at equal dB SL sustained activation widths were slightly broader for monopolar than for bipolar stimulation (E and G). At equal peak spike rates, sustained monopolar and bipolar activation widths were nearly identical (F and H).