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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
inability to recognize objects by touch, in the presence of intact cutaneous and proprioceptive hand sensation; caused by a lesion in the contralateral parietal lobe.
Farlex Partner Medical Dictionary © Farlex 2012
tactile agnosiaNeurology Impaired tactile sensation, with inability to recognize objects by touch, a common finding in parietal lobe tumors; TA is a subtle, nondisabling disorder caused by unilateral damage to parietotemporal cortices that may be severe in left brain infarcts DiffDx Astereognosis, a complex somatosensory disorder, tactile aphasia. See Agnosia.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
tac·tile ag·no·si·a(tak'til ag-nō'zē-ă)
Inability to recognize objects by touch, in the presence of intact cutaneous and proprioceptive hand sensation; caused by a lesion in the contralateral parietal lobe.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012