The purpose of this study was to analyze physiological reactions and visual preferences for lawn and flowerbed preferred by mental patients, and green space which is highly related with healing effects. Subjects were 25 mild cases of schizophrenia, who on the recommendation of their doctor, resided in psychiatric hospitals located in Jeollabuk-do, Korea. The survey was carried out in August 2010. The subjects were shown computer graphic simulations by a beam projector, and then brain wave and preferences were measured. In regards to physiological responses, the separate arrangement of tree cluster promoted a sense of stability and vitality, simultaneously. In the aspect of visual preferences, just one mass was preferred. The natural landscape planting pattern was visually preferred. There was a difference in preferences for the planting proportion of evergreen and deciduous trees in the leaf-fall and leaf-color seasons, but when both of them are taken into consideration, it is advisable that 75% of trees planted be occupied by evergreens to encourage emotional stability. The higher the ratio of tree to a lawn, the higher the visual preference. The ratio of 1:1 or 1:0.5 between a lawn and trees is advisable if the physiological effect is considered, but creating a lawn alone should be avoided. With regard to color preferences for the flower bed, orange was visually preferred. Pink was desirable to create a sense of emotional stability, and red to physiologically revitalize the subjects.

ABSTRACT
 1. Introduction
 2. Literature Reviews
  2.1 Preceding Studies
  2.2 Electroencephalogram (EEG)
 3. Methods
  3.1 Study Subjects
  3.2 Experiment Method
  3.3 Analysis Method
 4. Results and Discussions
  4.1 Analysis of Physiological Responses
  4.2 Analysis of Visual Preferences
  4.3 Comparative Analysis of PhysiologicalResponse and Visual Preference
 5. Conclusions
 References

• Deugsoo Ahn(Dept. of Landscape Architecture, Chonbuk National University) Corresponding author