Colour Preference and Healing in Digital Roaming Landscape: A Case Study of Mental Subhealth Populations

From the perspective of emotional preference, studies have been conducted about landscape healing for subhealth people in the National High-Tech Zone (the study area). Combined with a preliminary practice investigation, Unity 2019 was used to make a digital roaming landscape, and 91 subjects with a history of mental subhealth diseases were randomly invited to participate in the immersive experimentation of the Human&ndash:Machine Environment Synchronisation (ErgoLAB) platform. After the experiment, the subjects were invited to fill in a Likert scale as the control group. The interest preference, emotion fluctuation, and healing effect of landscape colour were verified. The results show that: (1) The variation trend of interest reflected the concentration of interest in landscape, and the order of degree of interest, ranging from high to low, went Green &gt: Yellow &gt: Blue &gt: Red &gt: Orange &gt: Purple &gt: Cyan. (2) The subjects&rsquo: interest in landscape colour was correlated with the arousal of positive emotions. The correlation between interest in landscape colour and positive emotions, from high to low, went Blue &gt: Green &gt: Yellow, while the correlation between red, cyan, orange, and purple was not significant. (3) The mean skin conductance (SC) fluctuation variance of subjects was 5.594%, which confirmed that the healing effect of digital roaming landscape scenes was significant under the state of low arousal. According to the Likert scale data, subjects&rsquo: scores of the healing effect of landscapes, from high to low, went as follows: Green &gt: Yellow &gt: Red &gt: Blue &gt: Cyan &gt: Orange &gt: Purple. The results provide a new method for demonstrating the logical relationship between the digital landscape interest experience&ndash:emotional awakening&ndash:healing effect and providing a theoretical method and construction scheme for landscape colour configuration in the implementation of landscape healing projects.