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Related Experiment Video

Updated: Dec 25, 2025

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning
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Abrupt, Asynchronous Changes in Action Representations by Anterior Cingulate Cortex Neurons during Trial and Error

Eldon Emberly1, Jeremy K Seamans2

  • 1Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.

Cerebral Cortex (New York, N.Y. : 1991)
|April 3, 2020
PubMed
Summary
This summary is machine-generated.

Neurons in the anterior cingulate cortex (ACC) change their responses abruptly, not gradually, as animals learn. This asynchronous, individual change creates a gradual population-level shift, impacting decision-making strategies.

Keywords:
foragingprefrontalreinforcement learningtetrode

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Area of Science:

  • Neuroscience
  • Decision-making
  • Behavioral science

Background:

  • Action representations in the brain acquire value through learning.
  • Striatal regions show gradual value acquisition.
  • Anterior cingulate cortex (ACC) neuronal representations often change abruptly, unlike striatal regions.

Purpose of the Study:

  • Investigate if ACC neuronal representations acquire value gradually or abruptly.
  • Understand the role of ACC in decision-making and learning.
  • Examine the relationship between individual neuronal changes and population-level activity.

Main Methods:

  • Recorded ensemble activity of ACC neurons in rats performing a lever-selection task.
  • Monitored rat lever preferences and lever press responses.
  • Analyzed neuronal response changes in relation to behavioral shifts.

Main Results:

  • Rat lever preferences shifted gradually towards the rewarded lever.
  • Most individual ACC neurons abruptly changed responses to lever presses (<2 trials).
  • Asynchronous neuronal transitions across the population created a gradual population-level representation.

Conclusions:

  • ACC neuronal representations change abruptly, contrasting with gradual learning in striatal regions.
  • Asynchronous, abrupt individual neuronal transitions contribute to gradual population-level learning.
  • Rapid changes in ACC action representations may facilitate adaptive choice strategies.