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Fig. 3. (A) State dependency of the effect of crustacean cardioactive peptide
(CCAP) on the frontal ganglion (FG) burst frequency. Data show the average
change in the FG burst frequency as percentage of control. In the column
labelled `No rhythm', the treatment produced enhanced and tonic spiking
activity, preventing a determination of burst frequency. Data outlined by a
dotted box were used for the cross-correlation analyses shown in B. Pairs of
bars marked by different letters differ significantly (values are mean
± s.d.; P<0.05; N=5-10). (B) Cross-correlation
analysis matrices based on the FG bursts' temporal characteristics. The
y and x axes represent the burst index number (colour code
scale is shown on the right). The matrix was constructed from a total sequence
of 33 bursts. The first 11 bursts were recorded after application of
10-6 mol l-1 CCAP to an FG dissected from feeding
animals. The next 11 bursts correspond to recordings made after application of
10-6 mol l-1 CCAP to an FG dissected from moulting
animals, and the last 11 bursts represent the activity after application of
10-5 mol l-1 CCAP to FG from feeding animals. See text
for details.
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