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VisualEyes: A Modular Software System for Oculomotor Experimentation
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Notational usage modulates attention networks in binumerates.

Atesh Koul1, Vaibhav Tyagi1, Nandini C Singh1

  • 1National Brain Research Centre, Deemed University Gurgaon, India.

Frontiers in Human Neuroscience
|June 7, 2014
PubMed
Summary
This summary is machine-generated.

Learning multiple number systems, like Hindu Nagari and Hindu Arabic digits, increases cognitive load. Infrequent use of Nagari digits leads to slower processing, reduced accuracy, and greater brain activity in attention and number networks.

Keywords:
NagariattentionbinumeratesfMRInotationnumeracy

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Area of Science:

  • Cognitive Neuroscience
  • Psycholinguistics
  • Neuroimaging

Background:

  • Multicultural environments necessitate learning diverse number notations.
  • Differential exposure and usage patterns exist between notations.
  • This disparity can impose a neurocognitive load on number processing.

Purpose of the Study:

  • To investigate the neurocognitive impact of differential usage of number notations.
  • To compare processing of Hindu Nagari digits versus Hindu Arabic digits in binumerate adults.
  • To identify neural correlates associated with processing less familiar number systems.

Main Methods:

  • Behavioral tasks (magnitude comparison) measuring reaction time and accuracy.
  • Functional magnetic resonance imaging (fMRI) to assess brain activity.
  • Analysis of neural networks involved in number processing and attention.

Main Results:

  • Adults showed lower preference and usage for Nagari digits compared to Arabic digits.
  • Nagari digit processing resulted in slower reaction times and lower accuracy.
  • fMRI revealed increased activation in number processing and attention networks for Nagari, including bilateral Intra-parietal Sulcus (IPS) and frontal regions.

Conclusions:

  • Infrequent exposure and usage of Nagari digits increase task difficulty and neurocognitive load.
  • The left IPS plays a crucial role in modulating performance in numerical tasks.
  • The attention network is vital for monitoring symbolic notation modes in individuals familiar with multiple number systems.