A computational model of perisaccadic mislocalization in total darkness using a binary eye position signal

The phenomenon of visual stability of the world during saccades is commonly called “position constancy”. Classically, the subtraction theory assumes a continuous extraretinal eye position signal (EEPS) which – if it is tuned perfectly to the eye movements – compensates any saccade-induced movements of stimuli on the retina. A phenomenon which suggests that the stipulated EEPS does not follow the eye movements perfectly is themislocalization of perisaccadic flashes . Experimental findings indicate that the time course of the EEPS is much smoother than the actual eye movements [1, 2]. A major problem of the continuous EEPS is that there has been no neurophysiological evidence for it so far.