page_title: Phantom contour
hierarchical_section_title: Phantom contour
caption_attribution_description: English: The rapid alternation between these two frames creates the illusion of a phantom contour. Inspired by Rodgers-Ramachandran and Ramachandran's 1998 study stimuli.
context_page_description: A phantom contour is a type of illusory contour. Most illusory contours are seen in still images, such as the Kanizsa triangle and the Ehrenstein illusion. A phantom contour, however, is perceived in the presence of moving or flickering images with contrast reversal. The rapid, continuous alternation between opposing, but correlated, adjacent images creates the perception of a contour that is not physically present in the still images. Quaid et al. have also authored a PhD thesis on the phantom contour illusion and it's spatiotemporal limits which maps out limits and proposes mechanisms for its perception centering around magnocellularly driven visual area MT.
context_section_description: A phantom contour is a type of illusory contour. Most illusory contours are seen in still images, such as the Kanizsa triangle and the Ehrenstein illusion. A phantom contour, however, is perceived in the presence of moving or flickering images with contrast reversal. The rapid, continuous alternation between opposing, but correlated, adjacent images creates the perception of a contour that is not physically present in the still images. Quaid et al. have also authored a PhD thesis on the phantom contour illusion and it's spatiotemporal limits (University of Waterloo) which maps out limits and proposes mechanisms for its perception centering around magnocellularly driven visual area MT (see also Quaid et al., 2005 on www.pubmed.com).
caption: When these two frames flicker back and forth, the illusion of a horizontal phantom contour appears between the black and white dots. Images inspired by the Rodgers-Ramachandran and Ramachandran 1998 study stimuli.[1]
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