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Causes of Agnosia. Agnosia is caused by damage to the parietal, temporal, or occipital lobe of the brain. These areas store memories of the uses and importance of familiar objects, sights, and sounds and integrate memory with perception and identification. Agnosia often occurs suddenly after a head injury or stroke .
Key Points. Agnosia is inability to identify an object using one or more of the senses. Diagnosis is clinical, often including neuropsychologic testing, with brain imaging (eg, CT, MRI) to identify the cause. Prognosis depends on the nature and extent of damage and patient age.
Apr 24, 2024 · agnosia, loss or diminution of the ability to recognize objects, sounds, smells, tastes, or other sensory stimuli. Agnosia is sometimes described as perception without meaning, as it typically occurs in the absence of any obvious deficit in memory or sensory function, with the organs of the sensory modalities themselves remaining intact.
