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Hyperphantasia is the condition of having extremely vivid mental imagery. [1] It is the opposite condition to aphantasia, where mental visual imagery is not present. [2] [3] The experience of hyperphantasia is more common than aphantasia [4] [5] and has been described as being "as vivid as real seeing". [4]
Apperceptive agnosia is failure of object recognition even when the basic visual functions (acuity, color, motion) and other mental processing, such as language and intelligence, are normal. [9] The brain must correctly integrate features such as edges, light intensity, and color from sensory information to form a complete percept of an object.
Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an animal's ability to recognize small details with precision. Visual acuity depends on optical and neural factors. Optical factors of the eye influence the sharpness of an image on its retina. Neural factors include the health and functioning of the retina, of ...
Dyslexia, previously known as word blindness, is a learning disability that affects either reading or writing. [ 1 ] [ 6 ] Different people are affected to different degrees. [ 3 ] Problems may include difficulties in spelling words, reading quickly, writing words , "sounding out" words in the head , pronouncing words when reading aloud and ...
"We do not store and retrieve words based on visual memory." "Our phonological filing system is the basis for word memory/word recognition." -Dr. Kilpatrick (Equipped for Reading Success). Visual memory, in an academic environment, entails work with pictures, symbols, numbers, letters, and especially words. Students must be able to look at a ...
The MNREAD acuity chart or Minnesota low vision reading chart is a text based chart used to measure near visual acuity in people with normal or low vision. [1] It can also be used to measure maximum reading speed, critical print size and the reading accessibility index of a person. [2] Digital and printed types of charts are available. [3]
There is a delay noted with exception words in English, including the examples chaos, unique, and enough. These studies also illustrate difficulties in understanding what it is that they are reading. The findings suggest that non-hyperlexic readers rely more heavily on word semantics in order to make inferences about word meaning. [12] [13]
Phonological dyslexia is a reading disability that is a form of alexia (acquired dyslexia), [1] resulting from brain injury, stroke, or progressive illness and that affects previously acquired reading abilities. The major distinguishing symptom of acquired phonological dyslexia is that a selective impairment of the ability to read pronounceable ...