FIG. 9.
Comparison of the effects of GABAA antagonists alone vs. GABAA antagonists and CP93129. Average changes in spike count at CF relative to the control are presented for a set of 15 neurons that were recorded for long enough for the sequential application of all 3 drug treatments. Spike count changes in the presence of a GABAA antagonist alone, or in the presence of a combination of a GABAA antagonist and CP93129, were each significantly greater than for CP93129, but not significantly different from each other (repeated-measures ANOVA, P = 0.005 overall, df = 2, 28; with post hoc LSD tests, P = 0.007 for CP93129 vs. GABAA antagonist alone, P = 0.003 for CP93129 vs. drug combination, P = 0.738 for GABAA antagonist alone vs. drug combination). *, significant difference from the CP93129-evoked change in spike count.