Shared Neural Circuits for Visuospatial Working Memory and Arithmetic in Children and Adults

Area of Science:

• Cognitive Neuroscience
• Developmental Psychology
• Neuroimaging

Background:

• Visuospatial working memory (VSWM) and arithmetic are crucial cognitive functions.
• Previous research suggests shared frontoparietal network involvement in both VSWM and arithmetic.
• Limited studies have directly compared neural overlap within individuals across development.

Purpose of the Study:

• To investigate the convergence of brain activation for VSWM and arithmetic within the same participants.
• To examine age-related changes in the neural network overlap between VSWM and arithmetic.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
• Participants included 38 children and 26 adults performing VSWM and arithmetic tasks.
• Analysis focused on the overlap of brain activation patterns between the two tasks and across age groups.

Main Results:

• Both children and adults activated the intraparietal sulcus (IPS) for VSWM and arithmetic.
• Children exhibited more focal activation in the right IPS, while adults showed bilateral IPS, superior frontal sulcus/middle frontal gyrus, and right insula recruitment.
• Adults displayed a more left-lateralized frontoparietal network for both tasks compared to children.

Conclusions:

• Findings suggest neurocognitive mechanisms linking VSWM and arithmetic that evolve with age.
• The study provides evidence for age-dependent changes in the association between VSWM and arithmetic neural networks.
• Developmental shifts in frontoparietal network recruitment underlie the relationship between these cognitive skills.