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Related Concept Videos

Learning Disabilities01:25

Learning Disabilities

403
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
403

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Arithmetic processing in children with dyscalculia: an event-related potential study.

Sonia Y Cárdenas1, Juan Silva-Pereyra2, Belén Prieto-Corona2

  • 1Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México.

Peerj
|February 11, 2021
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Summary

Children with dyscalculia show heterogeneous brain responses during math tasks, with working memory deficits influencing their processing. Understanding these differences is key to identifying distinct subgroups within dyscalculia.

Keywords:
Arithmetic N400 effectArithmetic verification taskChildrenDyscalculiaEvent-related potentialsLate positive component effectLearning disordersWorking memory

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Educational Psychology

Background:

  • Dyscalculia is a learning disorder impacting mathematical abilities.
  • Working memory deficits contribute to heterogeneity in dyscalculia.
  • Event-related potentials (ERPs) can reveal brain responses during arithmetic processing.

Purpose of the Study:

  • Compare arithmetic processing in children with dyscalculia versus those with good academic performance (GAP) using ERPs.
  • Investigate the relationship between working memory and ERP effects in children with dyscalculia.

Main Methods:

  • Recorded EEGs during an addition verification task in 22 children with dyscalculia and 22 with GAP.
  • Analyzed ERPs for congruent and incongruent probes, focusing on correct answers.
  • Used ANOVAs and nonparametric permutation tests for group comparisons and correlation analyses.

Main Results:

  • Children with GAP performed better than those with dyscalculia.
  • An arithmetic N400 effect was present in the GAP group but not the DYS group.
  • Both groups showed an LPC effect, which correlated positively with working memory index.
  • Two subgroups emerged within the DYS group based on working memory index, exhibiting different ERP patterns.

Conclusions:

  • Children with dyscalculia exhibit significant heterogeneity in their neural processing of arithmetic.
  • Working memory deficits are linked to distinct ERP patterns in a subgroup of children with dyscalculia.
  • The absence of an N400 effect in dyscalculia suggests a reliance on reevaluation processes (LPC) for calculation.