Perceptual completion in patients with drawing neglect: eye-movement and tachistoscopic investigations

A group of neglect patients was compared with control patients in the perception of complete and incomplete figures, including the patients' own incomplete drawings. Eye movements were recorded throughout. Under both tachistoscopic and free-vision conditions, the neglect patients failed to report the absence of the left side of figures only when this missing side lay in the left visual field; they always reported the absence of the left side when the right half-stimulus lay entirely within the right visual field. Thus, the position of a stimulus in the visual field is an important factor in explaining neglect.