A Simple after Image Method Demonstrating the Involuntary Multidirectional Eye Movements during Fixation

Abstract

An after image method is described with which the following features of the eye movements during fixation can be demonstrated in an easy way to a large audience: (a) the drifts; (b) the flicks and the inhibition of vision during the flicks; (c) the multidirectional character of both drifts and flicks; (d) the coordination of the movements in both eyes; and (e) the order of magnitude of the movements.