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Chunking is a powerful cognitive technique that improves short-term memory retention by organizing information into smaller, more manageable units. The brain, limited by working memory capacity, can more easily process and store information when it is divided into "chunks" rather than presented as discrete, unrelated elements. Chunking is especially useful when dealing with large amounts of information, such as numerical sequences, words, or complex ideas.
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How Time Pressure Modulates Individual Differences in the Functional Connectivity of Chunk Memory in Chess Games.

Chantat Leong1, Yuwen Lin1, Juan Zhang2

  • 1Centre for Cognitive and Brain Sciences, University of Macau, Macau SAR, China; Faculty of Health Sciences, University of Macau, Macau SAR, China.

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Chess experts maintain high performance under time pressure by enhancing memory chunk recall and reorganization. This study reveals distinct frontal-parietal functional connectivity patterns in experts during timed games.

Keywords:
chess expertchunk memoryfNIRSfunctional connectivitytime pressure

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Area of Science:

  • Cognitive Neuroscience
  • Neuroscience of Chess Expertise

Background:

  • Chess experts rely on memory chunks for decision-making.
  • The impact of time pressure on expert chess performance remains unclear.

Purpose of the Study:

  • To investigate cognitive neural mechanisms in chess experts versus novices under time constraints.
  • To explore how temporal stress affects decision-making and brain activity in chess players.

Main Methods:

  • Comparing performance and functional near-infrared spectroscopy (fNIRS) data of 20 experienced and 20 inexperienced players.
  • Analyzing brain activity during 1-minute and 5-minute chess game conditions.

Main Results:

  • Temporal constraints altered functional connectivity in frontal-parietal regions for all players.
  • Experienced players showed enhanced functional connectivity in specific brain regions (dorsolateral prefrontal cortex, inferior frontal gyrus, supramarginal gyrus, postcentral gyrus) under time pressure.
  • This enhanced connectivity suggests improved segmentation processes for experts.

Conclusions:

  • Chess experts leverage enhanced recall, reorganization, and integration of memory chunks to maintain performance under time pressure.
  • The segmentation process plays a crucial role in expert chess performance during time-constrained situations.
  • fNIRS reveals distinct neural adaptations in experts facing temporal stress in chess.