What Is Visual Agnosia?
Visual aggravation refers to things that patients can no longer rely on vision to recognize or can't recognize clearly before without any difficulty. This visual misrecognition is not caused by vision problems, and has nothing to do with the patient's intelligence.
- Visual aggravation is the most explored content in affirmation research. At present, this content is subdivided into several different types of inconsistency, including object inconsistency, face inconsistency, space inconsistency, color inconsistency, simultaneous inconsistency, text inconsistency, and category inconsistency. [1]
Visual insufficiency
- Object misidentification refers to the obstacles to the recognition of objects present in the visual pathway, while the same objects can be identified through other sensory pathways. Sometimes patients can use items they can't identify, but when they are presented to them, they can't tell the purpose of the item. [1]
Visual insufficiency
- Facial misrecognition means that the patient cannot recognize who he is when he sees a familiar face. In serious cases, not only his relatives and close friends could not be identified, even a man or a woman could not be distinguished, and his face could not be distinguished from others in the mirror. However, patients can use other information to compensate for the difficulties caused by this face misidentification. For example, patients can identify people by observing hair color, hairstyle, accessories, moles and scars. In addition, patients can also use information from other sensory pathways to assist judgment. For example, when an identified person speaks, the patient immediately recognizes who it is. [1]
Visual insufficiency
- Spatial misrecognition refers to the inability of the patient to discern spatial orientation. Patients may also get lost in previously familiar areas. Sometimes, the patient can recognize which store, which building, and which school this is, but can't tell from which details which street he is on, or from one place to the designated place. [1]
Visual insufficiency
- Color misidentification has nothing to do with color blindness, which means that patients with brain damage have lost the ability to recognize colors that can be recognized before the illness. Except for some patients who need color recognition professionally, in general, color misidentification is rarely raised by the patient himself, but found through a certain measurement. [1]
Visual agnostic syndrome
- Simultaneous misrecognition is generally recognized clinically as a manifestation of Baring's syndrome. Baring's syndrome is a clinical neurological disorder that usually includes three obstacles: visual pointing disorder; visual motor disorders; and visual attention disorder, where visual attention disorder is a simultaneous misconception. It appears that the patient can recognize individual objects and characters in a picture or a scene, but cannot correctly understand the entire picture or scene. [1]
Perceptual disorders of vision
- The main feature of this misconception is that the patient cannot correctly recognize three-dimensional objects appearing at different angles. This symptom seems to be an impediment to perception constancy. [1]
Visual insufficiency
- Also called simple alexia. There is a phenomenon of spelling letters when reading, that is, when the patient cannot read a word, he will try to read the constituents of the word letter by letter, and when he or she has finished reading all the letters , Often suddenly and correctly read the words that just failed to read again. [1]
Visual insufficiency category
- The patient's misidentification cannot be attributed to the processing of language information. In some tasks that do not rely entirely on language, such as the use of gestures to express objects, the patient's misidentification symptoms will also be apparent. For example, patient MD cannot name very common fruits or vegetables, such as oranges and peaches, but can name rare abacus and pyramid sphinx without difficulty. [1]