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Related Concept Videos

Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

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 cerebellum's...
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Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
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Lateral prefrontal cortex contributes to maladaptive decisions.

Gui Xue1, Chi-Hung Juan, Chi-Fu Chang

  • 1National Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China. guixue@gmail.com

Proceedings of the National Academy of Sciences of the United States of America
|March 7, 2012
PubMed
Summary
This summary is machine-generated.

The brain

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Decision Science

Background:

  • Humans often make irrational decisions with random events.
  • The neural basis for these suboptimal choices is not well understood.

Purpose of the Study:

  • To investigate the neural mechanisms behind the gambler's fallacy (GF).
  • To explore the causal role of the left lateral prefrontal cortex (LPFC) in GF strategy.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used during a matching pennies game.
  • Anodal transcranial direct current stimulation (tDCS) was applied over the left LPFC.

Main Results:

  • A strong blood oxygen level-dependent (BOLD) response in the left LPFC predicted GF use.
  • Left LPFC stimulation enhanced GF strategy and decision "stickiness".

Conclusions:

  • The left LPFC plays a causal role in employing suboptimal decision strategies based on false beliefs.
  • Cognitive control demands are critical when the LPFC implements such strategies.