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Fig. 6. Percentage change (mean ± 1 S.D.) in responses of EOD waveform
parameters to injection of serotonin at doses
2.5 nmol g-1, or
to saline controls. EOD parameters were measured as in
Fig. 2. Means were compared
with two-sample t-tests; the P values shown are one-tailed.
Compared to the controls, serotonin caused significant increases in amplitude,
second phase duration (dur-P2), and second phase repolarization time
(
-P2), but not of first phase duration (dur-P1).