space-perception

The riddle, though not necessarily the mystery, does not consist in the survival of the aesthetic instinct of which the musical one is a mere sub-category, but in the origin and selectional establishment of its elementary constituents, say for instance space-perception and empathy, both of which exist equally outside that instinct which is a mere compound of them and other primary tendencies.

The Beautiful An Introduction to Psychological Aesthetics Vernon Lee 1895

For given space-perception and empathy and their capacity of being felt as satisfactory or unsatisfactory, the aesthetic imperative is not only intelligible but inevitable.

The Beautiful An Introduction to Psychological Aesthetics Vernon Lee 1895

But we should always have space-perception if one half of the circular process above described comes from an outer activity, and the other half from an inner activity.

Harvard Psychological Studies, Volume 1 Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory. Various 1889

It is, however, not only the first in the order of time, but especially important for the reason that it demonstrates in a striking manner the slow acquirement of space-perception by the eye, and also the acquirement of the first and second dimensions of space (cf.vol. i, p. 57).

The Mind of the Child, Part II The Development of the Intellect, International Education Series Edited By William T. Harris, Volume IX. William T. Preyer 1869