Figure 2From: Interaction with indoor plants may reduce psychological and physiological stress by suppressing autonomic nervous system activity in young adults: a randomized crossover studyComparison of psychological assessments between plant and computer stimuli. (A) Feelings of comfort, (B) the feeling of relaxation, and (C) the feeling of naturalness. N = 24, mean ± SD, **P < 0.01 according to the Wilcoxon signed-rank test.Back to article page