Multidimensional Exploration of Indoor Color Environments and The Emotional and Cognitive Response - A Systematic Literature Review of Empirical Studies Based on EEG -

This study systematically reviews EEG-based empirical research on the effects of indoor color with the Stimulus-Organism-Response framework.Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, 20 peer-reviewed experimental studies were analyzed in terms of stimuli characteristics, research design, EEG indicators, and associated psychological and behavioral responses.The results show that (1) the stimuli used in the experiment were mainly walls with different colors applied to various types of spaces; (2) cool hues (blue/green) commonly increase alpha activity, supporting relaxation, while warm hues (red/yellow) more often elevate beta/gamma activity, reflecting arousal and engagement; (3) these effects are moderated by the function of the space, stimulus properties, presentation mode, and participant state; and (4) cool colors tend to promote calm affect and, in some contexts, better task performance, whereas warm colors tend to enhance engagement but also raise tension or error rates.This review concludes that color effects are context-dependent and highlights the need for standardized protocols to enable reproducible and evidence-based design guidance.