Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Pure global acalculia following a left subangular lesion.

M D Martory1, E Mayer, A J Pegna

  • 1Neuropsychology Unit, Department of Neurology, University Hospital, Geneva, Switzerland. Marie-Dominique.Martory@hcuge.ch

Neurocase
|August 20, 2003
PubMed
Summary

A patient with a subangular lesion developed severe acalculia, a global impairment in number processing beyond typical Gerstmann syndrome. This suggests isolated brain areas can cause profound calculation deficits.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Systematic curation and analysis of ovarian cancer data across multiple electronic record systems held within the UK National Health Service: a tertiary referral centre experience.

ESMO real world data and digital oncology·2026
Same author

Evidence for the Collective Nature of Radial Flow in Pb+Pb Collisions with the ATLAS Detector.

Physical review letters·2026
Same author

Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector.

Physical review letters·2025
Same author

Evidence for Longitudinally Polarized W Bosons in the Electroweak Production of Same-Sign W Boson Pairs in Association with Two Jets in pp Collisions at sqrt[s]=13  TeV with the ATLAS Detector.

Physical review letters·2025
Same author

A Single Centre Review of the Management of Testicular Sex Cord-Stromal Cell Tumours.

Clinical oncology (Royal College of Radiologists (Great Britain))·2025
Same author

Outcomes in stage IIA versus stage IIB/III in the PALLAS trial [ABCSG-42/AFT-05/PrE0109/BIG-14-13]).

Breast cancer research : BCR·2025

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurolinguistics

Background:

  • Gerstmann syndrome is typically associated with lesions in the left inferior parietal lobule (IPL).
  • Acalculia, the impairment of calculation, can manifest in various forms depending on the affected brain regions and cognitive processes.

Observation:

  • A case study of a right-handed patient with a pure Gerstmann syndrome due to a subangular lesion sparing the left IPL.
  • The patient exhibited severe deficits in both Arabic and verbal number processing, including production, comprehension, numerical facts, and problem-solving.

Findings:

  • Neuropsychological testing revealed a 'global acalculia', indicating a comprehensive deficit in number processing.
  • This global acalculia exceeded the anarithmetia typically observed in Gerstmann syndrome, suggesting the isolated subangular lesion was sufficient to cause this severe impairment.

Related Experiment Videos

Implications:

  • The findings challenge traditional models of acalculia by demonstrating that isolated lesions outside the canonical IPL can lead to severe calculation deficits.
  • Results suggest a potential role for the isolated subangular region in the manipulation of mental images crucial for numerical cognition.