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inability to recognize the import of sensory impressions; the varieties correspond with several senses and are distinguished as auditory (acoustic), gustatory, olfactory, tactile, and visual.
finger agnosia loss of ability to indicate one's own or another's fingers.
tactile agnosia inability to recognize familiar objects by touch. See also astereognosis.
time agnosia loss of comprehension of the succession and duration of events.
visual agnosia inability to recognize familiar objects by sight, usually due to a lesion in one of the visual association areas. Called also object blindness and psychic blindness.
visual-spatial agnosia (visuospatial agnosia) lack of the ability to analyze and orient using visual representations and their spatial relationships.
inability to localize objects or to appreciate distance, motion, and spatial relationships; caused by lesion in the occipital lobe. Compare: simultanagnosia.
an inability to analyze spatial relationships or to perform simple constructional tasks under visual control.
vis·u·al-spa·tial ag·no·si·a(vizh'ū-ăl-spā'shăl ag-nō'zē-ă)
Inability to localize objects or to appreciate distance, motion, and spatial relationships; caused by lesion in the occipital lobe.