No group difference in the quality of symbolic number representations between adults with dyscalculia and controls¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2024: baselines and conditions change

Subclaims¶

q3 i? ROI decoding and searchlight analyses found no significant group differences for symbolic number representations, though decoding was near chance levels. → Bulthé Jessica 2019

Evidence¶

Bulthé Jessica 2019¶

Bulthé Jessica, Prinsen Jellina, Vanderauwera Jolijn, Duyck Stefanie, Daniels Nicky, Gillebert Céline R., Mantini Dante, Op de Beeck Hans P., De Smedt Bert. (2019). Multi-method brain imaging reveals impaired representations of number as well as altered connectivity in adults with dyscalculia. Neuroimage, 190, 289-302. https://doi.org/10.1016/j.neuroimage.2018.06.012

q3 · i? · associational · r2

ROI-based decoding in the All Regions ROI; overall symbolic decoding performance was markedly lower than for non-symbolic numbers (63% to 47%), and the authors note this low sensitivity may have masked a possible group difference.

"For symbolic numbers there was no significant difference in the quality of the neural representations between controls and dyscalculia (t46 = −0.56, p = 0.58)."

Discussion¶

Learner Variables¶

• Learning Disabilities and Developmental Differences — predictor: learners who differ on it differ in outcomes
• Number Sense — outcome: instruction changes it

Related Claims¶

• No univariate activation-level differences between adults with dyscalculia and controls during symbolic or non-symbolic number processing — related
• Adults with dyscalculia show less distinct non-symbolic number representations than matched controls in anterior parietal, frontal and temporal cortex — related