DD children fail to disengage the default mode network during demanding arithmetic, showing aberrant coupling with task-positive IPS regions¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2019: baselines and conditions change
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? Children with DD showed prominent IPS hyper-connectivity with bilateral angular gyrus, posterior cingulate cortex and ventromedial prefrontal cortex — core DMN regions — and reduced deactivation during subtraction relative to addition in the precuneus. → Rosenberg-Lee 2014
Evidence¶
Rosenberg-Lee 2014¶
Rosenberg-Lee, M., Ashkenazi, S., Chen, T., Young, C. B., Geary, D. C., & Menon, V. (2014). Brain hyper-connectivity and operation-specific deficits during arithmetic problem solving in children with developmental dyscalculia. Developmental Science. https://doi.org/10.1111/desc.12216
q2 · i? · associational · r2
Authors' interpretation of the gPPI Group main effect and activation deactivation profiles in the same fMRI sample. The study reports "Children with DD showed prominent hyper-connectivity of the IPS with bilateral angular gyrus, posterior cingulate cortex and ventromedial prefrontal cortex", interpreted as failure to disengage the DMN from task-positive IPS regions.
"Children with DD showed prominent hyper-connectivity of the IPS with bilateral angular gyrus, posterior cingulate cortex and ventromedial prefrontal cortex. Collectively, these areas form core parts of the DMN"
Discussion¶
Learner Variables¶
- Operations and Place Value — predictor: learners who differ on it differ in outcomes
Related Claims¶
- Children with DD show hyper-connectivity, not reduced connectivity, between the IPS and fronto-parietal and default mode networks during arithmetic — possibly the same claim (merge candidate)
- Children with DD show greater brain activation than TD children in parietal, occipito-temporal and prefrontal regions during both addition and subtraction — related
- DD children show operation-specific hyperactivation: greater IPS, superior parietal lobule and fusiform activity during subtraction, while during addition only the right superior parietal lobule differs (lower in DD) — related
- Greater IPS connectivity correlates with worse reaction-time performance during addition but not subtraction in children — related
- Adults with dyscalculia show hyper-connectivity between primary visual cortex and inferior occipital cortex and fusiform gyrus — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
dd-failure-disengage-dmn-arithmetic |
title |
DD children fail to disengage the default mode network during demanding arithmetic, showing aberrant coupling with task-positive IPS regions |
description |
DD children fail to disengage the default mode network during demanding arithmetic, showing aberrant coupling with task-positive IPS regions |
status |
review |
evidence_strength |
weak |
newest_evidence |
2014 |
recheck_by |
2019 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — rosenberg-lee-2014 |
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