Figure 1.

Time schedule of the experimental sessions. Subjects received either endotoxin or placebo on the first study session. B = blood samples for analysis of cortisol and cytokine (IL‐6, IL‐1ra, IL‐10, and TNF‐α) plasma concentrations and record of vital signs and M = mood questionnaires. During fMRI scanning, subjects underwent a visual stimulation task and were asked to look at alternating emotional and neutral visual stimuli.