According to Fechner, aesthetics is an experiential perception which is empirically comprehensible in light of the characteristics of the subject undergoing the experience and those of the object.
[1] In his central work Introduction to Aesthetics (Vorschule der Ästhetik) Fechner describes his empirical approach extensively and in detail.
Nowadays, psychologists and neuroscientists define the field of aesthetics more narrowly as considering the perception, creation, and evaluation of objects that evoke an intense feeling.
In contrast, empirical aesthetics also embraces survey studies, field observations, and other non-experimental methods.
On the one hand, through the continuous development of cognitive and emotional models of the description of aesthetic experience,[3][4] taking into account various psychological variables.