Fig. 3. Effects of endotoxin and negative mood on reaction time in the affective Go/Nogo task.

Delta reaction times for positive vs. negative target words were computed according to Murphy et al.²⁷ with positive scores indicating a tendency to respond slower and negative scores indicating a tendency to respond faster to sad targets. Differences in delta reaction time between the sad and neutral mood condition were significant only in the LPS condition (*p < 0.05, result of post-hoc paired t-test). For results of ANOVA, please see text