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Fig. 3. T-cell responses to pulsed sound in katydids. (A) Synchronized oscillograms
of a double electrode recording from Amblycorypha oblongifolia. Top
trace: descending ipsilateral connective from the prothoracic ganglion; middle
trace: ascending ipsilateral connective from the prothoracic ganglion; bottom
trace: microphone recording of the sound stimulus (a 10 ms 25 kHz pulse). (B)
Audiogram curves of threshold T-cell responses to 10 ms pulses for
Amblycorypha oblongifolia (N=12) and Neoconocephalus
ensiger (N=17). Asterisks indicate significant differences
between species (t-tests, P<0.0025).