Fig. 1From: Effects of volatile sesquiterpenes from Japanese cedarwood on visual processing in the human brain: an event-related potential studyExterior and interior of the experimental huts. The interiors of both huts had a similar wood-grain appearance, but the interior of the resin-material hut was covered with wood-grain vinyl cloth to avoid visual effects. During the experiments, the window in each hut was covered with blackout curtains to prevent the effects of sunlight on the participants’ vision (see Additional file 1: Fig. S1)Back to article page