The Neuroanatomy of Visual Enumeration: Differentiating Necessary Neural Correlates for Subitizing versus Counting in a Neuropsychological Voxel-based Morphometry Study.
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| Title: | The Neuroanatomy of Visual Enumeration: Differentiating Necessary Neural Correlates for Subitizing versus Counting in a Neuropsychological Voxel-based Morphometry Study. |
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| Authors: | Demeyere, Nele, Rotshtein, Pia, Humphreys, Glyn W. |
| Source: | Journal of Cognitive Neuroscience. Apr2012, Vol. 24 Issue 4, p948-964. 17p. 4 Color Photographs, 5 Charts, 2 Graphs. |
| Subjects: | Neuroanatomy, Voxel-based morphometry, Neuropsychology, Brain imaging, Hemianopsia, Occipital lobe, Cerebral cortex |
| Abstract: | This study is the first to assess lesion-symptom relations for subitizing and counting impairments in a large sample of neuropsychological patients (41 patients) using an observer-independent voxel-based approach. We tested for differential effects of enumerating small versus large numbers of items while controlling for hemianopia and visual attention deficits. Overall impairments in the enumeration of any numbers (small or large) were associated with an extended network, including bilateral occipital and fronto-parietal regions. Within this network, severe impairments in accuracy when enumerating small sets of items (in the subitizing range) were associated with damage to the left posterior occipital cortex, bilateral lateral occipital and right superior frontal cortices. Lesions to the right calcarine extending to the precuneus led to patients serially counting even small numbers of items (indicated by a steep response slope), again demonstrating an impaired subitizing ability. In contrast, impairments in counting large numerosities were associated with damage to the left intraparietal sulcus. The data support the argument for some distinctive processes and neural areas necessary to support subitization and counting with subitizing relying on processes of posterior occipital cortex and with counting associated with processing in the parietal cortex. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 73030746 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The Neuroanatomy of Visual Enumeration: Differentiating Necessary Neural Correlates for Subitizing versus Counting in a Neuropsychological Voxel-based Morphometry Study. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Demeyere%2C+Nele%22">Demeyere, Nele</searchLink><br /><searchLink fieldCode="AR" term="%22Rotshtein%2C+Pia%22">Rotshtein, Pia</searchLink><br /><searchLink fieldCode="AR" term="%22Humphreys%2C+Glyn+W%2E%22">Humphreys, Glyn W.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Cognitive+Neuroscience%22">Journal of Cognitive Neuroscience</searchLink>. Apr2012, Vol. 24 Issue 4, p948-964. 17p. 4 Color Photographs, 5 Charts, 2 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Neuroanatomy%22">Neuroanatomy</searchLink><br /><searchLink fieldCode="DE" term="%22Voxel-based+morphometry%22">Voxel-based morphometry</searchLink><br /><searchLink fieldCode="DE" term="%22Neuropsychology%22">Neuropsychology</searchLink><br /><searchLink fieldCode="DE" term="%22Brain+imaging%22">Brain imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Hemianopsia%22">Hemianopsia</searchLink><br /><searchLink fieldCode="DE" term="%22Occipital+lobe%22">Occipital lobe</searchLink><br /><searchLink fieldCode="DE" term="%22Cerebral+cortex%22">Cerebral cortex</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study is the first to assess lesion-symptom relations for subitizing and counting impairments in a large sample of neuropsychological patients (41 patients) using an observer-independent voxel-based approach. We tested for differential effects of enumerating small versus large numbers of items while controlling for hemianopia and visual attention deficits. Overall impairments in the enumeration of any numbers (small or large) were associated with an extended network, including bilateral occipital and fronto-parietal regions. Within this network, severe impairments in accuracy when enumerating small sets of items (in the subitizing range) were associated with damage to the left posterior occipital cortex, bilateral lateral occipital and right superior frontal cortices. Lesions to the right calcarine extending to the precuneus led to patients serially counting even small numbers of items (indicated by a steep response slope), again demonstrating an impaired subitizing ability. In contrast, impairments in counting large numerosities were associated with damage to the left intraparietal sulcus. The data support the argument for some distinctive processes and neural areas necessary to support subitization and counting with subitizing relying on processes of posterior occipital cortex and with counting associated with processing in the parietal cortex. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1162/jocn_a_00188 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 948 Subjects: – SubjectFull: Neuroanatomy Type: general – SubjectFull: Voxel-based morphometry Type: general – SubjectFull: Neuropsychology Type: general – SubjectFull: Brain imaging Type: general – SubjectFull: Hemianopsia Type: general – SubjectFull: Occipital lobe Type: general – SubjectFull: Cerebral cortex Type: general Titles: – TitleFull: The Neuroanatomy of Visual Enumeration: Differentiating Necessary Neural Correlates for Subitizing versus Counting in a Neuropsychological Voxel-based Morphometry Study. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Demeyere, Nele – PersonEntity: Name: NameFull: Rotshtein, Pia – PersonEntity: Name: NameFull: Humphreys, Glyn W. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 0898929X Numbering: – Type: volume Value: 24 – Type: issue Value: 4 Titles: – TitleFull: Journal of Cognitive Neuroscience Type: main |
| ResultId | 1 |
