THE PERCEPTION OF SPACE
The feeling of crude extensity. The perception of spatial order.
Space-'relations'. The meaning of localization. 'Local
signs'. The construction of 'real' space. The subdivision
of the original sense-spaces. The sensation of motion over
surfaces. The measurement of the sense-spaces by each other.
Their summation. Feelings of movement in joints. Feelings
of muscular contraction. Summary so far. How the blind
perceive space. Visual space. Helmholtz and Reid on the
test of a sensation. The theory of identical points. The
theory of projection. Ambiguity of retinal impressions;--of
eye-movements. The choice of the visual reality. Sensations
which we ignore. Sensations which seem suppressed. Discussion
of Wundt's and Helmholtz's reasons for denying that retinal sensations
are of extension. Summary. Historical remarks.