Perception: Visual Discrimination

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figure-ground

the organization of the visual field into objects (the figures) that stand out from their surroundings (the ground). Figure ground: Refers to the foreground and the background. Impairment entails the inability to distinguish the two.

form constancy/form discrimination

Recognizing forms and objects as the same in various environments, positions, and sizes

position in space

assists in the determination of spatial relationships of figures and objects to ones self and other forms and objects. Allows us to make determinations of front, back, top, bottom, beside, under, over. This perceptual skill enables us to understand that a ball has rolled under a table. Also contributes to our ability to interpret a group of letters as a word, words as a sentence, as well as to dress and navigate through a crowded space. EX: does the client understand that the glass of water is behind the dinner plate? can the client follow the command to stand between two other clients?

depth perception/stereopsis

the ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance. (Myers Psychology 8e p. 245)

spatial relations

perceiving position of 2 or more objects in relation to self and each other

visuospatial agnosia

Deficit in perceiving spatial relations between objects or in relation to self.

topographical orientation

determines the location of objects and settings and the route to a destination and allows us to find our way around homes and communities

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