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The anterior cingulate cortex (ACC) guides motor cortex to update responses after environmental rule changes. This ACC-motor circuit is crucial for flexible decision-making and error correction in adaptive behaviors.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Behavioral Neuroscience

Background:

  • The anterior cingulate cortex (ACC) is known to be involved in flexible behavioral adjustments following environmental rule changes.
  • The precise mechanisms by which the ACC influences motor cortex to update rule representations and guide motor output remain largely unknown.

Purpose of the Study:

  • To investigate the role of anterior cingulate cortex (ACC) projections to secondary motor cortex in adaptive choice behavior.
  • To elucidate how the ACC facilitates the reorganization of rule representations within the motor cortex.

Main Methods:

  • Chemogenetic silencing of ACC projections to secondary motor cortex in rats.
  • Optogenetic silencing of ACC neurons targeted to error trials following rule switches.
  • Assessment of choice performance and neuronal activity in secondary motor cortex.

Main Results:

  • Silencing ACC projections to motor cortex impaired choice performance immediately after rule switches.
  • ACC silencing reduced the rule selectivity of secondary motor cortical neurons.
  • Targeted silencing of ACC neurons after errors worsened subsequent performance.

Conclusions:

  • The ACC is critical for updating motor cortex representations to adapt choices to new rules.
  • ACC-motor circuits play a vital role in monitoring errors and enabling flexible, adaptive behaviors.