Research Topics
| Daniel AnsariSummaryAffiliation: University of Western Ontario Country: Canada Publications
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Detail Information
Publications
What makes counting count? Verbal and visuo-spatial contributions to typical and atypical number developmentDaniel Ansari
Neurocognitive Development Unit, Institute of Child Health, University College, 30 Guilford Street, London WC1N 1EH, UK
J Exp Child Psychol 85:50-62. 2003....- Generation of novel motor sequences: the neural correlates of musical improvisationAaron L Berkowitz
Department of Music, Harvard University, Cambridge, MA, USA
Neuroimage 41:535-43. 2008..Thus, the invention of novel motor sequences in musical improvisation recruits a network of brain regions coordinated to generate possible sequences, select among them, and execute the decided-upon sequence... - Culture and education: new frontiers in brain plasticityDaniel Ansari
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, London, Ontario N6A 3K7, Canada
Trends Cogn Sci 16:93-5. 2012..Such research opens up a new frontier in brain plasticity research, breaking down the boundaries between neuroscience and other traditionally non-biological disciplines, resulting in many conceptual and practical implications... - Are non-abstract brain representations of number developmentally plausible?Daniel Ansari
Department of Psychology and Graduate Program in Neuroscience, University of Western Ontario, London, Ontario, Canada
Behav Brain Sci 32:329-30; discussion 356-73. 2009..The developmental predictions of the non-abstract theory are discussed and the need for a developmental perspective on the abstract versus non-abstract question highlighted... - Effects of development and enculturation on number representation in the brainDaniel Ansari
Numerical Cognition Laboratory, Department of Psychology and Graduate Program in Neuroscience, University of Western Ontario, Ontario N6G 2K3, Canada
Nat Rev Neurosci 9:278-91. 2008..This Review provides an evaluation of this contention and proposes hypotheses to guide investigations into the neural mechanisms that constrain the acquisition of cultural representations of numerical magnitude... - Linking visual attention and number processing in the brain: the role of the temporo-parietal junction in small and large symbolic and nonsymbolic number comparisonDaniel Ansari
Dartmouth College, USA
J Cogn Neurosci 19:1845-53. 2007.... - Age-related changes in the activation of the intraparietal sulcus during nonsymbolic magnitude processing: an event-related functional magnetic resonance imaging studyDaniel Ansari
Dartmouth College, USA
J Cogn Neurosci 18:1820-8. 2006..We propose that developmental impairments of number may be associated with atypical specialization of cortical regions underlying magnitude processing... - Does the parietal cortex distinguish between "10," "ten," and ten dots?Daniel Ansari
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, London, Ontario N6A 5B8, Canada
Neuron 53:165-7. 2007..Their results, while slightly different, converge to suggest that the answer may be neither, but rather that it depends on the hemisphere... - Typical and atypical development of visual estimation abilitiesDaniel Ansari
Neurocognitive Development Unit, Institute of Child Health, London, UK
Cortex 43:758-68. 2007.... - Developmental specialization in the right intraparietal sulcus for the abstract representation of numerical magnitudeIan D Holloway
Dartmouth College, Hanover, NH, USA
J Cogn Neurosci 22:2627-37. 2010.... - The cerebral basis of mapping nonsymbolic numerical quantities onto abstract symbols: an fMRI training studyIan M Lyons
Dartmouth College, USA
J Cogn Neurosci 21:1720-35. 2009..We conclude that the left parietal cortex, in particular, may play a central role in imbuing visual symbols with numerical meaning... - Common and segregated neural pathways for the processing of symbolic and nonsymbolic numerical magnitude: an fMRI studyIan D Holloway
Department of Education, Dartmouth College, Hanover, NH, USA
Neuroimage 49:1006-17. 2010..These results reveal both format-general and format-specific processing of numerical stimuli in the brain. The potential roles of these regions in symbolic and nonsymbolic numerical processing are discussed... - Dissociating response conflict from numerical magnitude processing in the brain: an event-related fMRI studyDaniel Ansari
Numerical Cognition Laboratory, Department of Education, Dartmouth College, 3 Maynard Street, Raven House, Hanover, NH 03755, USA
Neuroimage 32:799-805. 2006.... - Small and large number processing in infants and toddlers with Williams syndromeJo Van Herwegen
Neurocognitive Development Unit, UCL Institute of Child Health, UK
Dev Sci 11:637-43. 2008..Finally, we argue that individual differences in large number processing in infancy are more likely than small number processing to be predictive of later development of numerical cognition... - Congruency proportion reveals asymmetric processing of irrelevant physical and numerical dimensions in the size congruity paradigmKarl Borgmann
Department of Psychology, University of Waterloo, Ontario, Canada
Can J Exp Psychol 65:98-104. 2011..The implications of this asymmetry are discussed in terms of the relative role of semantic and physical size information in representations of magnitude, and the role they play in both of these tasks... - Domain-specific and domain-general changes in children's development of number comparisonIan D Holloway
Department of Psychology, University of Western Ontario, Ontario, Canada
Dev Sci 11:644-9. 2008..Implications for theories of numerical cognition and its development are discussed... - The effect of mathematics anxiety on the processing of numerical magnitudeErin A Maloney
Department of Psychology, University of Waterloo, Waterloo, ON, Canada
Q J Exp Psychol (Hove) 64:10-6. 2011.... - Challenging the reliability and validity of cognitive measures: the case of the numerical distance effectErin A Maloney
Department of Psychology, University of Waterloo, Canada
Acta Psychol (Amst) 134:154-61. 2010..Results are discussed with respect to their implications for the use of the NDE as a metric of numerical processing and representation in research with both children and adults... - Neural correlates of symbolic number processing in children and adultsDaniel Ansari
Numerical Cognition Laboratory, Department of Education, Dartmouth College, Hanover, New Hampshire 03755, USA
Neuroreport 16:1769-73. 2005..This change may reflect maturation of underlying representations and increasing automaticity in mapping between numerical symbols and the magnitudes they represent... - Using eye tracking to study numerical cognition: the case of the ratio effectRebecca Merkley
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, Westminster Hall, London, ON, N6G 2K3, Canada
Exp Brain Res 206:455-60. 2010.... - One to four, and nothing more: nonconscious parallel individuation of objects during action planningJason P Gallivan
Neuroscience Program, University of Western Ontario, London, Canada
Psychol Sci 22:803-11. 2011..Our findings suggest that conscious perceptual processing and nonconscious movement planning are constrained by a common underlying mechanism limited by the number of items that can be simultaneously represented... - Mathematics anxiety affects counting but not subitizing during visual enumerationErin A Maloney
Department of Psychology, University of Waterloo, Ontario, Canada
Cognition 114:293-7. 2010..Furthermore, working memory was found to mediate this group difference. These findings demonstrate that the problems associated with mathematics anxiety exist at a level more basic than would be predicted from the extant literature... - How is phonological processing related to individual differences in children's arithmetic skills?Bert De Smedt
Numerical Cognition Laboratory, University of Western Ontario, Canada
Dev Sci 13:508-20. 2010.... - Using developmental trajectories to understand developmental disordersMichael S C Thomas
Developmental Neurocognition Laboratoy, School of Psychology, Birkbeck College, University of London, London, UK
J Speech Lang Hear Res 52:336-58. 2009..In this article, the authors present a tutorial on the use of developmental trajectories for studying language and cognitive impairments in developmental disorders and compare this method with the use of matching... - Parametric effects of numerical distance on the intraparietal sulcus during passive viewing of rapid numerosity changesDaniel Ansari
Numerical Cognition Laboratory, Department of Education, Dartmouth College, 3 Maynard Street, Raven House, Hanover, NH 03755, USA
Brain Res 1067:181-8. 2006..These findings suggest that areas in and around the IPS are involved in numerical magnitude discrimination in the absence of an explicit task and response requirements... - White matter microstructures underlying mathematical abilities in childrenLucia van Eimeren
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, Ontario, Canada
Neuroreport 19:1117-21. 2008..Moreover, the findings point to the involvement of different white matter tracts for numerical operations and mathematical reasoning... - Age-related changes in brain activation associated with dimensional shifts of attention: an fMRI studyJ Bruce Morton
University of Western Ontario, Canada
Neuroimage 46:249-56. 2009..These differences were likely not attributable to behavioral differences as children and adults performed comparably. Implications for neurodevelopmental accounts of shifting are discussed... - Mapping numerical magnitudes onto symbols: the numerical distance effect and individual differences in children's mathematics achievementIan D Holloway
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, Ontario N6A 5C2, Canada
J Exp Child Psychol 103:17-29. 2009..Implications for the role of basic numerical competency and the role of accessing numerical magnitude information from Arabic numerals for the development of mathematical skills and their impairment are discussed... - Symbol processing in the left angular gyrus: evidence from passive perception of digitsGavin R Price
Numerical Cognition Laboratory, Department of Psychology, The University of Western Ontario, Ontario, Canada N6A 3K7
Neuroimage 57:1205-11. 2011..We conclude that Arabic digit processing depends specifically on the left AG rather than a ventral visual stream VNFA... - Effects of problem size and arithmetic operation on brain activation during calculation in children with varying levels of arithmetical fluencyBert De Smedt
Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, London, ON, Canada
Neuroimage 57:771-81. 2011..This might represent a neural correlate of fact retrieval impairments in children with mathematical difficulties... - Individual differences in children's mathematical competence are related to the intentional but not automatic processing of Arabic numeralsStephanie Bugden
Numerical Cognition Laboratory, Department of Psychology, The University of Western Ontario, Canada
Cognition 118:32-44. 2011.... - Linking brain-wide multivoxel activation patterns to behaviour: Examples from language and mathRajeev D S Raizada
Neukom Institute for Computational Science, HB 6255, Dartmouth College, Hanover, NH 03755, USA
Neuroimage 51:462-71. 2010..In a manner which is unencumbered by arbitrary choices, our approach offers a method for investigating connections between brain and behaviour which is simple, rigorous and direct... - Effect of language switching on arithmetic: a bilingual FMRI studyVinod Venkatraman
SingHealth Research Facilities, Singapore
J Cogn Neurosci 18:64-74. 2006..These results considerably strengthen the notion that exact processing relies on verbal and language-related networks, whereas approximate processing engages parietal circuits typically involved in magnitude-related processing... - Neural correlates of symbolic and non-symbolic arithmeticVinod Venkatraman
Cognitive Neuroscience Laboratory, Singapore General Hospital, 7 Hospital Drive, 01-11, Singapore 169611, Singapore
Neuropsychologia 43:744-53. 2005..In contrast to recent findings, we found no significant activation for exact addition condition in left, language-related areas... - Individual differences in mathematical competence predict parietal brain activation during mental calculationRoland H Grabner
Division of Neuroradiology, Department of Radiology, Medical University of Graz, Austria
Neuroimage 38:346-56. 2007.... - Impaired parietal magnitude processing in developmental dyscalculiaGavin R Price
Curr Biol 17:R1042-3. 2007..This finding provides the first direct evidence for a specific impairment of parietal magnitude systems in DD during non-symbolic numerosity processing...