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Updated: May 14, 2026

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics (BM-PROMA)
10:58

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Published on: August 28, 2021

Arithmetic knowledge in early semantic dementia.

Simona Luzzi1, Viviana Cafazzo, Mauro Silvestrini

  • 1Department of Neuroscience, Polytechnic University of Marche, Ancona, Italy, s.luzzi@univpm.it.

Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
|January 29, 2013
PubMed
Summary
This summary is machine-generated.

Arithmetic knowledge is often impaired in early semantic dementia (SD), contrary to some literature. This study found calculation deficits, including sign recognition and factual errors, in SD patients.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • The preservation of arithmetic knowledge in semantic dementia (SD) remains debated, with limited systematic group studies.
  • Existing data primarily consists of single case reports, hindering definitive conclusions.

Purpose of the Study:

  • To investigate calculation abilities in a group of early semantic dementia patients.
  • To systematically assess arithmetic knowledge using a comprehensive neuropsychological battery.

Main Methods:

  • Evaluated eight patients with early semantic dementia (SD).
  • Utilized a specialized neuropsychological battery assessing arithmetic sign recognition, arithmetic facts, and written/mental calculation.

Main Results:

  • SD patients exhibited difficulties in recognizing arithmetic signs.
  • Impairments were observed in recalling arithmetic facts and procedural errors in calculation.
  • Individual variations in performance were noted within the patient group.

Conclusions:

  • This study provides evidence for impaired arithmetic knowledge in early semantic dementia.
  • Findings challenge the notion of arithmetic knowledge as an independent domain within the semantic system.
  • Contributes to ongoing research on cognitive deficits in semantic dementia.