Figure 1
From: Olfactory brain activations in patients with Major Depressive Disorder
Odor Stimulation Paradigm. Three runs of 4 min each with a total of 4 presentations per odor per run were measured. Each run was followed by verbal ratings of the odors regarding intensity and pleasantness on a scale ranging from 0 (very weak) to 10 (very intense) or -5 (unpleasant) to 5 (very pleasant) respectively. Odors were presented in a block-design with alternating ‘olfactory stimulation’- and ‘clean odorless air’ periods. The run order was pseudorandomized across subjects.
