acalculia


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Related to acalculia: Gerstmann syndrome, Finger agnosia

acalculia

 [a″kal-ku´le-ah]
inability to solve mathematical calculations.

a·cal·cu·li·a

(ā'kal-kyū'lē-a),
A form of aphasia characterized by the inability to perform simple mathematical problems; found with lesions of various areas of the cerebral hemispheres, and often an early sign of dementia.
[G. a- priv. + L. calculo, to reckon]

Acalculia

An inability to perform simple mathematical calculations (adding subtracting, multiplying, dividing); loss of a previously possessed ability to engage in arithmetic calculation. 
Brain locations Parietal lobe (angular gyrus), frontal lobe
Associations Dementia, Gerstmann syndrome

acalculia

Neurology Loss of a facility with arithmetic calculation

a·cal·cu·li·a

(ā-kal-kyū'lē-ă)
A form of aphasia characterized by the inability to perform simple mathematical problems; found with lesions of the cerebral hemispheres, and often an early sign of dementia.
[G. a- priv. + L. calculo, to reckon]

acalculia

Total or partial loss of the ability to perform even simple arithmetical calculations. This may rarely be a specific developmental disorder, but is more often acquired as a result of brain damage, usually to the PARIETAL LOBE, in the course of a STROKE. In this case, the acalculia is a kind of APHASIA. Acalculia without obvious cause may be a herald of DEMENTIA.
References in periodicals archive ?
Acalculia from a right hemisphere lesion: Dealing with "where" in multiplication procedures.
Additional research on persons with acalculia (i.e., difficulties in mathematical computation) further supports the existence of a dedicated neural system for the processing of mathematical symbols and concepts in the left parietal lobe (Levin, Goldstein, & Spiers, 1995).
LS: You awaken Lenin in 1922 as the "sick body." His evolving paralysis and acalculia, his fits of rage and disgust--all documented--immediately open up enormous "plastic" possibilities.
Finally, the chapter by Seron and Noel deals with the relation between acalculia (a deficit in calculation and number processing) and language processing at different levels (lexical and syntactic).
Acalculia y apraxia ideomotora pueden aparecer incluso durante los dos primeros anos de evolucion.
La coexistencia de una apraxia gestual y constructiva y de una acalculia no son criterios de exclusion para este sindrome, puesto que es posible encontrarlos en las lesiones focales agudas responsables de la afasia.