Influence of architectural interior design on human perception and emotion with the consideration of neural aesthetics

Interior contour, an essential component of the built environment, has drawn wide attention from home and abroad. From the perspective of neuroaesthetics, preference for architectural interior contour is closely tied to brain activity. Therefore, revealing the underlying neural basis of aesthetic preferences for architectural interior contour in terms of neuroimaging is of great importance. We recruited 30 healthy participants for behavioural assessment and functional magnetic resonance imaging (fMRI) scans. Using percent amplitude of fluctuation (PerAF), the current study measured participants’ neuroaesthetic responses to curvilinear and rectilinear architectural interior contours in the three frequency bands. When participants viewed architectural images with curvilinear contours, the PerAF was significantly reduced in multiple brain regions, in comparison to rectilinear architectural interior contours. Moreover, significant negative correlations were observed between ratings of aesthetic judgments of curvilinear space and increased PerAF values in specific regions including the left Rolandic operculum. Aesthetic judgments were significantly correlated with PerAF values in specific brain regions, including the left middle frontal gyrus. Our study reveals that participants have a higher preference for curvilinear contours over rectilinear contours. Neural response varied across different architectural contours, highlighting the complex interplay of neural mechanisms underlying aesthetic perception.