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  2. Aphantasia - Wikipedia

    en.wikipedia.org/wiki/Aphantasia

    Aphantasia (/ ˌeɪfænˈteɪʒə / AY-fan-TAY-zhə, / ˌæfænˈteɪʒə / AF-an-TAY-zhə) is the inability to visualize. [1] The phenomenon was first described by Francis Galton in 1880, [2] but has remained relatively unstudied. Interest in the phenomenon renewed after the publication of a study in 2015 conducted by a team led by Adam Zeman ...

  3. List of reported UFO sightings - Wikipedia

    en.wikipedia.org/wiki/List_of_reported_UFO_sightings

    List of reported UFO sightings. Most commonly reported shapes in UFO sightings gathered by the National UFO Reporting Center Online Database (NUFORC) [1] This is a list of notable reported sightings of unidentified flying objects (UFOs) and related claims of close encounters or abductions. UFOs are generally considered to include any perceived ...

  4. Pareidolia - Wikipedia

    en.wikipedia.org/wiki/Pareidolia

    Pareidolia (/ ˌpærɪˈdoʊliə, ˌpɛər -/; [1] also US: / ˌpɛəraɪ -/) [2] is the tendency for perception to impose a meaningful interpretation on a nebulous stimulus, usually visual, so that one detects an object, pattern, or meaning where there is none. Pareidolia is a type of apophenia. Common examples include perceived images of ...

  5. Visual agnosia - Wikipedia

    en.wikipedia.org/wiki/Visual_agnosia

    Visual agnosia is an impairment in recognition of visually presented objects. It is not due to a deficit in vision (acuity, visual field, and scanning), language, memory, or intellect. [1] While cortical blindness results from lesions to primary visual cortex, visual agnosia is often due to damage to more anterior cortex such as the posterior ...

  6. Unidentified flying object - Wikipedia

    en.wikipedia.org/wiki/Unidentified_flying_object

    Unidentified flying object. An unidentified flying object (UFO), or unidentified anomalous phenomenon (UAP) [a], is any perceived airborne, submerged or transmedium phenomenon that cannot be immediately identified or explained. [2] Upon investigation, most UFOs are identified as known objects or atmospheric phenomena, while a small number ...

  7. Ambiguous image - Wikipedia

    en.wikipedia.org/wiki/Ambiguous_image

    The use of the ambiguous image phenomena can be seen in select works of M.C. Escher and Salvador Dalí. The children's book, Round Trip , by Ann Jonas used ambiguous images in the illustrations, where the reader could read the book front to back normally at first, and then flip it upside down to continue the story and see the pictures in a new ...

  8. Inattentional blindness - Wikipedia

    en.wikipedia.org/wiki/Inattentional_blindness

    The following criteria are required to classify an event as an inattentional blindness episode: 1) the observer must fail to notice a visual object or event, 2) the object or event must be fully visible, 3) observers must be able to readily identify the object if they are consciously perceiving it, [3] and 4) the event must be unexpected and the failure to see the object or event must be due ...

  9. Mental image - Wikipedia

    en.wikipedia.org/wiki/Mental_image

    For other uses, see Mind's eye (disambiguation). In the philosophy of mind, neuroscience, and cognitive science, a mental image is an experience that, on most occasions, significantly resembles the experience of "perceiving" some object, event, or scene but occurs when the relevant object, event, or scene is not actually present to the senses ...