Temporal abnormalities in children with developmental dyscalculia.
Recent imaging studies have associated Developmental dyscalculia (DD) to structural and functional alterations corresponding Parietal and the Prefrontal cortex (PFC). Since these areas were shown also to be involved in timing abilities, we hypothesized that time processing is abnormal in DD. We compared time processing abilities between 10 children with pure DD (8 years old) and 11 age-matched healthy children. Results show that the DD group underestimated duration of a sub-second scale when asked to perform a time comparison task. The timing abnormality observed in our DD participants is consistent with evidence of a shared fronto-parietal neural network for representing time and quantity.
Department of Motor Science, University of Palermo, Palermo, Italy. cvicario@sissa.it
Carmelo Mario
CM
Vicario
Gaetano
G
Rappo
Annamaria
A
Pepi
Andrea
A
Pavan
Davide
D
Martino
D000704:Analysis of Variance; D016022:Case-Control Studies; D002648:Child; D002658:Developmental Disabilities / Q000150:complications*; D060705:Dyscalculia / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000175:diagnosis / Q000209:etiology*; D011594:Psychometrics; D011930:Reaction Time; D013223:Statistics as Topic; D013998:Time Perception / Q000502:physiology*