This study was conducted to investigate the change of workers physiology and sensitivity according to the plant decoration activity using electroencephalographic (EEG), electrocardiogram, and semantic differential (SD) methods on 31 male and female workers in their twenties. Plant decoration activity and writing documents on a computer (WDOC) were carried out for 10 minutes each. The relative slow alpha power spectrum (RSA) has been highly exhibited at most measurement points at plant decoration activity compared to WDOC, and ratio of alpha to high beta spectrum (RAHB) was higher in the parietal lobe responsible for visual function in charge of visual function and showed stable and relaxed effect with little stress or tension. In addition, the relatively fast alpha power spectrum (RFA), which is responsible for visual function, after WDOC was higher than after plant decoration activity in the left parietal lobe (P <.05). Although not statistically significant, the relative high beta power spectrum (RHB) and the ratio of mid beta to theta (RMT), which are stress concentration indexes with tension, were highly regarded as a whole when performing WDOC. There was little difference in heart rate between after both activities. However, high frequency (HF) component indicating parasympathetic nervous system activity was more highly active after WDOC than Planting decoration activity, and the low frequency (LF) component indicating sympathetic nervous system activity tended to be lower after WDOC than after planting activity meaning that plant activity have a sense of stability than WDOC and these results were similar to brain wave analysis. In addition, the sense of comfort, naturalness, calm were significantly higher when the plant decoration activity was performed than when the WDOC was performed in the SD emotional vocabulary survey. These results could be interpreted that plant decoration activity induced more physiologically and psychologically stability and relaxation than WDOC, and enhanced attention ability in appropriate awakening state.

Introduction
 Methods
  Selection of subjects
  Environmental conditions in the experimental room
  Materials and methods
  Semantic differential (SD) analysis
  Statistical analysis
 Results and Discussion
  Changes in the EEG of workers depending on plant decoration and document writing activities
  Changes in the autonomic nervous system depending on plant decoration and document writing activities
  Preference of subjects depending on plant decoration and document writing activities
  Changes in semantic differential (SD) depending on plant decoration and document writing activities
 Conclusions
 References

• Hye Sook Jang(National Institute of Horticultural & Herbal Science, RDA) Corresponding author
• Gyung Mee Gim(National Institute of Horticultural & Herbal Science, RDA)
• Kwang Jin Kim(National Institute of Horticultural & Herbal Science, RDA)
• Hyun Hwan Jung(National Institute of Horticultural & Herbal Science, RDA)