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  2. Depth perception - Wikipedia

    en.wikipedia.org/wiki/Depth_perception

    Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception. It is a major factor in perceiving the world in three dimensions . Depth sensation is the corresponding term for non-human animals, since although it is known that they can sense the distance of an object, it is not known ...

  3. Amodal completion - Wikipedia

    en.wikipedia.org/wiki/Amodal_completion

    Another example of this is a cat behind a picket fence. Amodal completion allows the cats to be seen as a full animal continuing behind each picket of the fence. [2] Essentially amodal completion allows for sensory stimulation from any parts of an occluded object we can not directly see. [3] Real life examples of amodal completion

  4. Ambiguous image - Wikipedia

    en.wikipedia.org/wiki/Ambiguous_image

    An occlusion is the visual perception of one object being behind or in front of another object, providing information about the order of the layers of texture. [6] The illusion of occlusion is apparent in the effect of illusory contours, where occlusion is perceived despite being non-existent.

  5. Tunnel effect - Wikipedia

    en.wikipedia.org/wiki/Tunnel_effect

    In experimental psychology, the tunnel effect is the perception as a single object moving beyond an occluding object and then reappearing after a suitable amount of time on the other side of it. This phenomenon has been studied by Burke (1952), who discovered that the optimal amount of time for giving the impression of a single object is ...

  6. Ponzo illusion - Wikipedia

    en.wikipedia.org/wiki/Ponzo_illusion

    An example of the Ponzo illusion. Both of the horizontal yellow lines are the same length. The Ponzo illusion is a geometrical-optical illusion that takes its name from the Italian psychologist Mario Ponzo (1882–1960). Ponzo never claimed to have discovered it, and it is indeed present in earlier work.

  7. Emmert's law - Wikipedia

    en.wikipedia.org/wiki/Emmert's_law

    Emmert's law has been used to investigate the moon illusion (the apparent enlargement of the moon or sun near the horizon compared with higher in the sky). [7] [8] A neuroimaging study that examined brain activation when participants viewed afterimages on surfaces placed at different distances found evidence supporting Emmert's Law and thus size constancy played out in primary visual cortex ...

  8. Subjective constancy - Wikipedia

    en.wikipedia.org/wiki/Subjective_constancy

    Subjective constancy or perceptual constancy is the perception of an object or quality as constant even though our sensation of the object changes. [1] While the physical characteristics of an object may not change, in an attempt to deal with the external world, the human perceptual system has mechanisms that adjust to the stimulus.

  9. Geon (psychology) - Wikipedia

    en.wikipedia.org/wiki/Geon_(psychology)

    For example, a circle swept along a straight axis would define a cylinder (see Figure). A rectangle swept along a straight axis would define a "brick" (see Figure). Four dimensions with contrastive values (i.e., mutually exclusive values) define the current set of geons (see Figure): Shape of cross section: round vs. straight.