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A developmental functional MRI study of spatial working memory.

K M Thomas1, S W King, P L Franzen

  • 1University of Pittsburgh Medical Center, 3811 O'Hara Street, Pittsburgh, Pennsylvania 15213, USA.

Neuroimage
|August 25, 1999
PubMed
Summary
This summary is machine-generated.

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Functional magnetic resonance imaging (fMRI) reveals similar brain activity in children and adults during spatial working memory tasks. This study highlights comparable neural activation patterns in developing and mature brains for this cognitive function.

Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Developmental Neuroscience

Background:

  • Spatial working memory is crucial for cognitive development.
  • Understanding age-related differences in brain activation during cognitive tasks is important.
  • Previous neuroimaging studies have explored working memory, but less is known about spatial working memory in children.

Purpose of the Study:

  • To investigate and compare cortical activity patterns in children and adults during a spatial working memory task using functional magnetic resonance imaging (fMRI).
  • To identify brain regions involved in spatial working memory across different age groups.
  • To explore potential differences in neural activation between children and adults during this task.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed to measure brain activity.

Related Experiment Videos

  • Participants included school-age children (8-10 years) and adults (19-26 years).
  • A spatial working memory task involving searching a linear array and recalling dot locations was performed under visual, motor, and working memory conditions.

    • Main Results:

    • Both children and adults exhibited significant brain activity in the left precentral and postcentral gyri, and the right cerebellum during the motor condition compared to the visual condition.
    • Comparison between memory and motor conditions revealed comparable activation in the right superior frontal gyrus, right dorsolateral prefrontal cortex, right superior parietal cortex, and bilateral inferior parietal cortex for both age groups.
    • Despite similar activation patterns, significant behavioral performance differences were observed between children and adults.

    Conclusions:

    • Spatial working memory tasks engage highly similar cortical regions in school-age children and adults.
    • The observed prefrontal activations in this spatial task are more dorsal compared to findings in nonspatial working memory studies.
    • The study suggests that the neural networks supporting spatial working memory are largely established by school age, though behavioral performance may still differ.