Mild Transient Hypercapnia as a Novel Fear Conditioning Stimulus Allowing Re-Exposure during Sleep
Figure 7
Shows the mean ± s.e.m plasma epinephrine under basal conditions and after each series of exposures to the CS or the paired CS-US at 9 am, 10 am, 12 noon, 2 pm, and 3 pm.
Differences in plasma epinephrine across time were determined by repeated measures one-way ANOVA with Dunnett’s post-hoc comparisons relative to the 9 am presentation of the conditioned stimulus alone.