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Math on cortex-enhanced delta phase synchrony in math experts during long and complex math demonstrations.

Hanna Poikonen1,2, Samuel Tobler1, Dragan Trninić1

  • 1Professorship for Learning Sciences and Higher Education, Department of Humanities, Social and Political Sciences, Swiss Federal Institute of Technology (ETH) Zurich, Zurich 8092, Switzerland.

Cerebral Cortex (New York, N.Y. : 1991)
|February 16, 2024
PubMed
Summary
This summary is machine-generated.

Math experts show stronger brain connectivity during complex tasks, particularly in delta frequency bands. This enhanced fronto-parietal functional connectivity distinguishes their cognitive processing from novices.

Keywords:
Body postureComplex cognitionEEGExpertiseMathematics

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Mathematics Cognition

Background:

  • Neural oscillations are crucial for working memory and reasoning, modulated by challenging cognitive tasks like mathematics.
  • Prior research focused on local cortical synchrony in theta and alpha bands during simple math tasks.
  • The impact of complex mathematical stimuli on inter-regional functional connectivity remains largely unexplored.

Purpose of the Study:

  • To investigate inter-regional functional connectivity during the processing of long and complex mathematical stimuli.
  • To compare brain activity patterns between math experts and novices.
  • To examine the influence of posture (sitting vs. standing) on cognitive processing and functional connectivity.

Main Methods:

  • Electroencephalography (EEG) recorded cortical activity from math experts and novices.
  • Participants viewed long (13-68 seconds) and complex (bachelor-level) mathematical demonstrations.
  • Data analyzed for phase synchrony in delta (0.5-4 Hz), theta (4-8 Hz), and alpha (8-13 Hz) frequency bands.

Main Results:

  • Math experts exhibited stronger fronto-parietal connectivity in the left hemisphere compared to novices, indicated by enhanced delta band phase synchrony.
  • Standing posture amplified group differences, suggesting interference with novices' concentration due to balance maintenance.
  • No significant group differences were found in theta or alpha frequency band synchrony.

Conclusions:

  • Low-frequency oscillations, specifically delta waves, play a role in modulating inter-regional connectivity during complex mathematical cognition.
  • Enhanced fronto-parietal functional connectivity is a distinguishing neural characteristic of math experts.
  • Cognitive load and postural demands interact, potentially impacting concentration differently between experts and novices.