Fig. 1
From: Alleviation of acute stress response by black pepper aroma administration
Schematic presentation of the experimental protocol. Participants performed a 30-min calculation task as a short-term stressor under three aroma conditions: black pepper, ginger, and dipropylene glycol (DPG) (scentless air as a control). Each participant experienced three aroma conditions on three separate days (within-participant design). The order of aroma conditions was counterbalanced