What Is Agnosia?
Reviewed: Dr. Gromatzky
3. Tactile Agnosia
Tactile agnosia occurs when the patient is unable to recognize objects through touch. The weight is felt but recognition of the object without other sensory cues is not possible. This is due to lesions that affect the parietal lobe of the brain.
Some subtypes of tactile agnosia include astereognosis and autotopagnosia. In astereognosis, there is inability to identify the objects based on touch leading to inability to associate information about texture, size, and weight. Objects are still recognizable by sight. In autotopagnosia, there is inability to orient parts of the body where the awareness of the position of your own body parts becomes impossible.
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