Abstract
A patient had an infarct in the territory of the left anterior cerebral artery, which destroyed the medial cortex of the frontal lobe, and presented with a picture of primary dyscalculia. Lexical and syntactic processing of verbal and arabic numbers and comprehension of operation symbols were intact, but retrieval of basic, over-learned facts was mildly impaired and execution of calculation procedures was more severely impaired. As the same type of procedure could be passed or sometimes failed it suggests a deficit of activation of the appropriate procedures. The location of the lesion was unusual and suggested participation of medial frontal areas in calculation processes.
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bogousslavsky J., Assal G., Regli F. Infarctus du territoire de l'artère cérébrale antérieure gauche. II. Troubles du langage. Rev Neurol (Paris) 1987;143(2):121–127. [PubMed] [Google Scholar]
- Bogousslavsky J., Regli F. Anterior cerebral artery territory infarction in the Lausanne Stroke Registry. Clinical and etiologic patterns. Arch Neurol. 1990 Feb;47(2):144–150. doi: 10.1001/archneur.1990.00530020040012. [DOI] [PubMed] [Google Scholar]
- Boller F., Grafman J. Acalculia: historical development and current significance. Brain Cogn. 1983 Jul;2(3):205–223. doi: 10.1016/0278-2626(83)90010-6. [DOI] [PubMed] [Google Scholar]
- HECAEN H., ANGELERGUES R., HOUILLIER S. [The clinical varieties of acalculias during retrorolandic lesions: statistical approach to the problem]. Rev Neurol (Paris) 1961 Aug;105:85–103. [PubMed] [Google Scholar]
- McCloskey M., Caramazza A., Basili A. Cognitive mechanisms in number processing and calculation: evidence from dyscalculia. Brain Cogn. 1985 Apr;4(2):171–196. doi: 10.1016/0278-2626(85)90069-7. [DOI] [PubMed] [Google Scholar]
- McCloskey M., Sokol S. M., Goodman R. A. Cognitive processes in verbal-number production: inferences from the performance of brain-damaged subjects. J Exp Psychol Gen. 1986 Dec;115(4):307–330. doi: 10.1037//0096-3445.115.4.307. [DOI] [PubMed] [Google Scholar]
- Sokol S. M., McCloskey M., Cohen N. J., Aliminosa D. Cognitive representations and processes in arithmetic: inferences from the performance of brain-damaged subjects. J Exp Psychol Learn Mem Cogn. 1991 May;17(3):355–376. doi: 10.1037/0278-7393.17.3.355. [DOI] [PubMed] [Google Scholar]
- Warrington E. K. The fractionation of arithmetical skills: a single case study. Q J Exp Psychol A. 1982 Feb;34(Pt 1):31–51. doi: 10.1080/14640748208400856. [DOI] [PubMed] [Google Scholar]