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Fig. 4. Sequences of pulse intervals (SPIs) used for playbacks (A,B) and recorded
from males in response to playbacks (C-E). All SPIs are plotted as time
intervals between adjacent EODs versus temporal positions of the
intervals in sequence. (A) Playback SPI recorded from an apparent female of
the type I morph (specimen 2319; cat. no. MRAC 77-41-P-45; collected just
below Loa-Loa Rapids; SL=82 mm). The first smooth acceleration in this SPI
(arrow) is expanded in B. (C) Examples of bursts of EODs that males only
produced within 10 cm of either playback electrode. One burst indicated by an
arrow is expanded in D. (E) In many cases, males exhibited discharge cessation
while rapidly approaching a playback electrode. Both approach and cessation
occurred between the arrows in E. Cessations were usually followed by one or
more bursts when the male neared the electrode.