Citation

Roelofs CO. Acta Psychol. 1960; 17: 193-217.

Copyright

(Copyright © 1960, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

According to the author, exocentral or relative localization is based on tensions between the adjustment impulses induced by objects in the environment. Egocentral or absolute localization is based on the tensions between the reflex gaze tonus and the abovementioned adjustment impulses. The same is believed to hold true with regard to depth perception; the objections to this view to be found in the literature are not justifiable according to the author.To elucidate this, a plea is first of all made for the existence of monocular optomotor reflexes, at least in the early days of life.A description is then given of the manner in which the monocular reflexes transform themselves into binocular reflexes by cortical binding, thus providing the basis of optic convergence innervation in the limited sense of the term.It is demonstrated that the manifestations and limitations of optic depth localization are completely compatible with the possibilities and limitations of optic convergence innervation.A description is finally given of the Panum effect, which also involves binocular depth perception. This effect is explained with the aid of the physiological tension theory. In the course of this paper various weak points in Linschoten's psychological attraction theory are pointed out.