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Aphasia (c.f. dysphasia):failure of language output (may be motor, sensory, syntactical, nominal, receptive, expressive).
Agnosia: failure to identify or recognise objects despite intact sensory function.
- Anosagnosia: failure to recognise own physical disability
- Autotopagnosia: misidentifies parts of own body
- Topographical agnosia: unable to orientate to familiar geography
- Hemisomatagnosia: ignores half of body
- Tactile agnosia: unable to recognise letters or shapes traced on hand
- Astereognosis: does not recognise familiar objects by touch alone
Apraxia: failure to carry out motor function despite intact sense organs and peripheral motor system.
- Constructional apraxia: unable to copy design using pen/matchsticks, blocks etc. (may be a visuospatial agnosia).
- Dressing apraxia: unable to dress self.
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