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The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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Default mode and frontoparietal control networks bridge memory and choice consistency.

Jialuo Lai1, Fei Xin1

  • 1School of Psychology, Shenzhen University, Nanhai Avenue 3688, Shenzhen, Guangdong 518060, China.

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|December 9, 2025
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Memory influences decision-making consistency. Remembering food items speeds choices, and specific brain network connectivity predicts both memory accuracy and choice consistency, revealing key neural links.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Decision Science

Background:

  • Choice consistency is crucial for rational decision-making but often deviates in real-world scenarios.
  • Memory processes are hypothesized to influence choice variability, yet their neural underpinnings with choice consistency are unclear.

Purpose of the Study:

  • To investigate the interplay between memory retrieval and choice consistency.
  • To identify shared neural substrates linking memory and decision-making.

Main Methods:

  • Developed a novel behavioral paradigm combining memory retrieval and food-based decision tasks.
  • Acquired resting-state and task functional magnetic resonance imaging (fMRI) data from 44 healthy young adults.
  • Utilized connectome-based predictive modeling to analyze functional connectivity.

Main Results:

  • Remembered food items led to faster choice reaction times than forgotten items.
  • Default Mode Network (DMN) connectivity patterns predicted memory accuracy and choice consistency.
  • DMN-memory network connectivity positively predicted memory accuracy, while DMN-frontoparietal control network connectivity predicted both memory accuracy and choice consistency.

Conclusions:

  • Memory retrieval significantly impacts choice behavior and reaction times.
  • Specific patterns of DMN connectivity are critical for memory accuracy and choice consistency.
  • The DMN and frontoparietal control network serve as neural bridges between memory-guided value signals and consistent decision-making.