The neural centers concerned in the mediation of apparent movement vision.

Abstract

Cinematographic or apparent-movement vision, indicated by visually-elicited nystagmic reactions, was produced in guinea pigs by stroboscopic illumination of a moving striated pattern. Observations made on 18 animals after partial and complete decortication showed that cinematographic vision in the guinea pig may be carried out in the absence of the cortical centers of vision or in the absence of the somatic cortex as a whole. Neural interaction within the visual system, which is basic to the phenomena of apparent movement, may evidently take place in centers below the level of the cortex. Since the interaction of visual impulses producing apparent movement evidently constitutes a type of neural fusion the observations demonstrate the occurrence of fusion processes in optic centers of the thalamus and midbrain.