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Development of Spatial and Verbal Working Memory Capacity in the Human Brain.

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Title: Development of Spatial and Verbal Working Memory Capacity in the Human Brain.
Authors: Thomason, Moriah E., Race, Elizabeth, Burrows, Brittany, Whitfield-Gabrieli, Susan, Glover, Gary H., Gabrieli, John D. E.
Source: Journal of Cognitive Neuroscience. Feb2009, Vol. 21 Issue 2, p316-332. 17p. 1 Color Photograph, 3 Diagrams, 4 Charts, 2 Graphs.
Subjects: Short-term memory, Brain, Children, Young adults, Frontal lobe, Parietal lobe
Abstract: A core aspect of working memory (WM) is the capacity to maintain goal-relevant information in mind, but little is known about how this capacity develops in the human brain. We compared brain activation, via fMRI, between children (ages 7-12 years) and adults (ages 20-29 years) performing tests of verbal and spatial WM with varying amounts (loads) of information to be maintained in WM. Children made disproportionately more errors than adults as WM load increased. Children and adults exhibited similar hemispheric asymmetry in activation, greater on the right for spatial WM and on the left for verbal WM. Children, however, failed to exhibit the same degree of increasing activation across WM loads as was exhibited by adults in multiple frontal and parietal cortical regions. Thus, children exhibited adult-like hemispheric specialization, but appeared immature in their ability to marshal the neural resources necessary to maintain large amounts of verbal or spatial information in WM. [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
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  Data: Development of Spatial and Verbal Working Memory Capacity in the Human Brain.
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  Data: <searchLink fieldCode="AR" term="%22Thomason%2C+Moriah+E%2E%22">Thomason, Moriah E.</searchLink><br /><searchLink fieldCode="AR" term="%22Race%2C+Elizabeth%22">Race, Elizabeth</searchLink><br /><searchLink fieldCode="AR" term="%22Burrows%2C+Brittany%22">Burrows, Brittany</searchLink><br /><searchLink fieldCode="AR" term="%22Whitfield-Gabrieli%2C+Susan%22">Whitfield-Gabrieli, Susan</searchLink><br /><searchLink fieldCode="AR" term="%22Glover%2C+Gary+H%2E%22">Glover, Gary H.</searchLink><br /><searchLink fieldCode="AR" term="%22Gabrieli%2C+John+D%2E+E%2E%22">Gabrieli, John D. E.</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Short-term+memory%22">Short-term memory</searchLink><br /><searchLink fieldCode="DE" term="%22Brain%22">Brain</searchLink><br /><searchLink fieldCode="DE" term="%22Children%22">Children</searchLink><br /><searchLink fieldCode="DE" term="%22Young+adults%22">Young adults</searchLink><br /><searchLink fieldCode="DE" term="%22Frontal+lobe%22">Frontal lobe</searchLink><br /><searchLink fieldCode="DE" term="%22Parietal+lobe%22">Parietal lobe</searchLink>
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  Data: A core aspect of working memory (WM) is the capacity to maintain goal-relevant information in mind, but little is known about how this capacity develops in the human brain. We compared brain activation, via fMRI, between children (ages 7-12 years) and adults (ages 20-29 years) performing tests of verbal and spatial WM with varying amounts (loads) of information to be maintained in WM. Children made disproportionately more errors than adults as WM load increased. Children and adults exhibited similar hemispheric asymmetry in activation, greater on the right for spatial WM and on the left for verbal WM. Children, however, failed to exhibit the same degree of increasing activation across WM loads as was exhibited by adults in multiple frontal and parietal cortical regions. Thus, children exhibited adult-like hemispheric specialization, but appeared immature in their ability to marshal the neural resources necessary to maintain large amounts of verbal or spatial information in WM. [ABSTRACT FROM AUTHOR]
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  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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              Text: Feb2009
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