atopognosis
Definition
Noun: A neurological condition characterized by the inability to identify the exact location of a touch on the body, despite being able to perceive the touch itself. It is a specific type of sensory agnosia resulting from a brain lesion, typically in the parietal lobe.
Usage
This is a highly specialized medical term used in neurology and clinical contexts. It describes a precise diagnostic symptom. - The patient's atopognosis was a key finding in localizing the parietal lobe lesion. - Testing for atopognosis involves asking the patient to point to where they were touched while their eyes are closed.
Advanced Usage
- The term is often discussed in contrast to other sensory deficits, such as astereognosis (inability to recognize objects by touch) or graphesthesia (impaired ability to recognize numbers traced on the skin).
- Atopognosis is considered a disorder of topognosia, which is the normal ability to localize touch.
Variants and Related Words
- Atopognosia (n): Often used interchangeably with to denote the same clinical condition.
- Topognosia (n): The normal, intact ability to localize a tactile stimulus.
- Somatotopagnosia (n): A more severe related condition involving impairment in localizing and identifying parts of one's own body.
Synonyms
- Topographical agnosia (for touch): A descriptive synonym emphasizing the spatial aspect of the deficit.
- Tactile localization deficit: A plain-language description of the symptom.
Antonyms
- Topognosia: The normal ability to localize touch.
- Intact tactile localization: A phrase describing the absence of the deficit.
Noun
-
absence or loss of topognosia; inability to locate correctly a point of touch
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