  How does the form of our surroundings impact the ways we feel? This paper
extends the body of research on the effects that space and light have on
emotion by focusing on critical features of architectural form and illumination
colors and their spatiotemporal impact on arousal. For that purpose, we
solicited a corpus of spatial transitions in video form, lasting over 60
minutes, annotated by three participants in terms of arousal in a
time-continuous and unbounded fashion. We process the annotation traces of that
corpus in a relative fashion, focusing on the direction of arousal changes
(increasing or decreasing) as affected by changes between consecutive rooms.
Results show that properties of the form such as curved or complex spaces align
highly with increased arousal. The analysis presented in this paper sheds some
initial light in the relationship between arousal and core spatiotemporal
features of form that is of particular importance for the affect-driven design
of architectural spaces.
