Daniel Ansari

Summary

Affiliation: University of Western Ontario
Country: Canada

Publications

  1. ncbi request reprint What makes counting count? Verbal and visuo-spatial contributions to typical and atypical number development
    Daniel 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
  2. doi request reprint Generation of novel motor sequences: the neural correlates of musical improvisation
    Aaron L Berkowitz
    Department of Music, Harvard University, Cambridge, MA, USA
    Neuroimage 41:535-43. 2008
  3. doi request reprint Culture and education: new frontiers in brain plasticity
    Daniel Ansari
    Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, London, Ontario N6A 3K7, Canada
    Trends Cogn Sci 16:93-5. 2012
  4. ncbi request reprint 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
  5. doi request reprint Effects of development and enculturation on number representation in the brain
    Daniel 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
  6. ncbi request reprint Linking visual attention and number processing in the brain: the role of the temporo-parietal junction in small and large symbolic and nonsymbolic number comparison
    Daniel Ansari
    Dartmouth College, USA
    J Cogn Neurosci 19:1845-53. 2007
  7. ncbi request reprint Typical and atypical development of visual estimation abilities
    Daniel Ansari
    Neurocognitive Development Unit, Institute of Child Health, London, UK
    Cortex 43:758-68. 2007
  8. ncbi request reprint Age-related changes in the activation of the intraparietal sulcus during nonsymbolic magnitude processing: an event-related functional magnetic resonance imaging study
    Daniel Ansari
    Dartmouth College, USA
    J Cogn Neurosci 18:1820-8. 2006
  9. doi request reprint The cerebral basis of mapping nonsymbolic numerical quantities onto abstract symbols: an fMRI training study
    Ian M Lyons
    Dartmouth College, USA
    J Cogn Neurosci 21:1720-35. 2009
  10. doi request reprint Developmental specialization in the right intraparietal sulcus for the abstract representation of numerical magnitude
    Ian D Holloway
    Dartmouth College, Hanover, NH, USA
    J Cogn Neurosci 22:2627-37. 2010

Detail Information

Publications46

  1. ncbi request reprint What makes counting count? Verbal and visuo-spatial contributions to typical and atypical number development
    Daniel 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
    ....
  2. doi request reprint Generation of novel motor sequences: the neural correlates of musical improvisation
    Aaron 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...
  3. doi request reprint Culture and education: new frontiers in brain plasticity
    Daniel 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...
  4. ncbi request reprint 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...
  5. doi request reprint Effects of development and enculturation on number representation in the brain
    Daniel 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...
  6. ncbi request reprint Linking visual attention and number processing in the brain: the role of the temporo-parietal junction in small and large symbolic and nonsymbolic number comparison
    Daniel Ansari
    Dartmouth College, USA
    J Cogn Neurosci 19:1845-53. 2007
    ....
  7. ncbi request reprint Typical and atypical development of visual estimation abilities
    Daniel Ansari
    Neurocognitive Development Unit, Institute of Child Health, London, UK
    Cortex 43:758-68. 2007
    ....
  8. ncbi request reprint Age-related changes in the activation of the intraparietal sulcus during nonsymbolic magnitude processing: an event-related functional magnetic resonance imaging study
    Daniel 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...
  9. doi request reprint The cerebral basis of mapping nonsymbolic numerical quantities onto abstract symbols: an fMRI training study
    Ian 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...
  10. doi request reprint Developmental specialization in the right intraparietal sulcus for the abstract representation of numerical magnitude
    Ian D Holloway
    Dartmouth College, Hanover, NH, USA
    J Cogn Neurosci 22:2627-37. 2010
    ....
  11. doi request reprint The role of the left intraparietal sulcus in the relationship between symbolic number processing and children's arithmetic competence
    Stephanie Bugden
    Numerical Cognition Laboratory, Department of Psychology, The University of Western Ontario, Canada
    Dev Cogn Neurosci 2:448-57. 2012
    ..These results suggest that the left IPS is a key neural substrate for the relationship between the relative of precision of the representation of numerical magnitude and school-level arithmetic competence...
  12. ncbi request reprint Dissociating response conflict from numerical magnitude processing in the brain: an event-related fMRI study
    Daniel Ansari
    Numerical Cognition Laboratory, Department of Education, Dartmouth College, 3 Maynard Street, Raven House, Hanover, NH 03755, USA
    Neuroimage 32:799-805. 2006
    ....
  13. doi request reprint Small and large number processing in infants and toddlers with Williams syndrome
    Jo 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...
  14. doi request reprint Common and segregated neural pathways for the processing of symbolic and nonsymbolic numerical magnitude: an fMRI study
    Ian 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...
  15. doi request reprint Domain-specific and domain-general changes in children's development of number comparison
    Ian 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...
  16. doi request reprint Congruency proportion reveals asymmetric processing of irrelevant physical and numerical dimensions in the size congruity paradigm
    Karl 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...
  17. doi request reprint The effect of mathematics anxiety on the processing of numerical magnitude
    Erin A Maloney
    Department of Psychology, University of Waterloo, Waterloo, ON, Canada
    Q J Exp Psychol (Hove) 64:10-6. 2011
    ....
  18. pmc A two-minute paper-and-pencil test of symbolic and nonsymbolic numerical magnitude processing explains variability in primary school children's arithmetic competence
    Nadia Nosworthy
    Numerical Cognition Laboratory, Department of Psychology, University of Western Ontario, London, Ontario, Canada
    PLoS ONE 8:e67918. 2013
    ..The theoretical and practical implications of these findings are discussed which include the use of this measure as a possible tool for identifying students at risk for future difficulties in mathematics. ..
  19. doi request reprint Overlapping and distinct brain regions involved in estimating the spatial position of numerical and non-numerical magnitudes: an fMRI study
    Stephan E Vogel
    Numerical Cognition Laboratory, Department of Psychology and Brain and Mind Institute, The University of Western Ontario, Westminster Hall, Room 325, London, Ont N6A 3K7, Canada
    Neuropsychologia 51:979-89. 2013
    ....
  20. doi request reprint Why mental arithmetic counts: brain activation during single digit arithmetic predicts high school math scores
    Gavin R Price
    Numerical Cognition Laboratory, Department of Psychology and Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada N6G 2K3
    J Neurosci 33:156-63. 2013
    ....
  21. doi request reprint Using developmental trajectories to understand developmental disorders
    Michael 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...
  22. ncbi request reprint Neural correlates of symbolic number processing in children and adults
    Daniel 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...
  23. doi request reprint Challenging the reliability and validity of cognitive measures: the case of the numerical distance effect
    Erin 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...
  24. doi request reprint Semantic and perceptual processing of number symbols: evidence from a cross-linguistic fMRI adaptation study
    Ian D Holloway
    Department of Psychology, Westminster Hall, The University of Western Ontario, London, ON N6A 3K7, Canada
    J Cogn Neurosci 25:388-400. 2013
    ..Additionally, we reveal a striking difference in the laterality of parietal activation between the semantic processing of the two symbols types...
  25. doi request reprint Nonsymbolic numerical magnitude comparison: reliability and validity of different task variants and outcome measures, and their relationship to arithmetic achievement in adults
    Gavin R Price
    Numerical Cognition Laboratory, Department of Psychology, The University of Western Ontario, London, ON, N6A 2K7, Canada
    Acta Psychol (Amst) 140:50-7. 2012
    ..These results reveal important consistencies across nonsymbolic number comparison tasks, indicating a shared cognitive foundation. However, the relationship between ANS acuity and arithmetic performance remains unclear...
  26. doi request reprint White matter microstructures underlying mathematical abilities in children
    Lucia 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...
  27. doi request reprint Using eye tracking to study numerical cognition: the case of the ratio effect
    Rebecca 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
    ....
  28. doi request reprint One to four, and nothing more: nonconscious parallel individuation of objects during action planning
    Jason 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...
  29. doi request reprint Mathematics anxiety affects counting but not subitizing during visual enumeration
    Erin 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...
  30. doi request reprint 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
    ....
  31. ncbi request reprint Parametric effects of numerical distance on the intraparietal sulcus during passive viewing of rapid numerosity changes
    Daniel 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...
  32. doi request reprint Effects of problem size and arithmetic operation on brain activation during calculation in children with varying levels of arithmetical fluency
    Bert 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...
  33. doi request reprint Age-related changes in brain activation associated with dimensional shifts of attention: an fMRI study
    J 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...
  34. doi request reprint Mapping numerical magnitudes onto symbols: the numerical distance effect and individual differences in children's mathematics achievement
    Ian 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...
  35. doi request reprint Symbolic estrangement: evidence against a strong association between numerical symbols and the quantities they represent
    Ian M Lyons
    University of Chicago, Department of Psychology, 5848 South University Avenue, Chicago, IL 60637, USA
    J Exp Psychol Gen 141:635-41. 2012
    ..Our data are consistent with the view that numerical symbols operate primarily as an associative system in which relations between symbols come to overshadow those between symbols and their quantity referents...
  36. pmc Linking brain-wide multivoxel activation patterns to behaviour: Examples from language and math
    Rajeev 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...
  37. doi request reprint Symbol processing in the left angular gyrus: evidence from passive perception of digits
    Gavin 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...
  38. doi request reprint Individual differences in children's mathematical competence are related to the intentional but not automatic processing of Arabic numerals
    Stephanie Bugden
    Numerical Cognition Laboratory, Department of Psychology, The University of Western Ontario, Canada
    Cognition 118:32-44. 2011
    ....
  39. ncbi request reprint Bridges over troubled waters: education and cognitive neuroscience
    Daniel Ansari
    Dartmouth College, Department of Education, HB 6103, Hanover, New Hampshire 03755, USA
    Trends Cogn Sci 10:146-51. 2006
    ....
  40. ncbi request reprint Paving the way towards meaningful interactions between neuroscience and education
    Daniel Ansari
    Numerical Cognition Laboratory, Department of Education, Dartmouth College, Hanover, NH 03755, USA
    Dev Sci 8:466-7. 2005
  41. ncbi request reprint Double dissociations in developmental disorders? Theoretically misconceived, empirically dubious
    Annette Karmiloff-Smith
    Neurocognitive Development Unit, Institute of Child Health, London, UK
    Cortex 39:161-3. 2003
  42. ncbi request reprint Effect of language switching on arithmetic: a bilingual FMRI study
    Vinod 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...
  43. ncbi request reprint Individual differences in mathematical competence predict parietal brain activation during mental calculation
    Roland H Grabner
    Division of Neuroradiology, Department of Radiology, Medical University of Graz, Austria
    Neuroimage 38:346-56. 2007
    ....
  44. ncbi request reprint Neural correlates of symbolic and non-symbolic arithmetic
    Vinod 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...
  45. ncbi request reprint Impaired parietal magnitude processing in developmental dyscalculia
    Gavin 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...