In a probabilistic reversal-learning task, prefrontal-cortex population activit…

In a probabilistic reversal-learning task, prefrontal-cortex population activity (monkey) and matched recurrent-neural-network models encode reversal probability in a stable, stationary state consistent with a line-attractor model, then transition during the trial into separable non-stationary trajectories — a synthesis result that anchors line-attractor accounts of recurrent cortical computation but is derived from primate, not mouse cortex.

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  "doi": "10.7554/elife.103660",
  "claim": "In a probabilistic reversal-learning task, prefrontal-cortex population activity (monkey) and matched recurrent-neural-network models encode reversal probability in a stable, stationary state consistent with a line-attractor model, then transition during the trial into separable non-stationary trajectories — a synthesis result that anchors line-attractor accounts of recurrent cortical computation but is derived from primate, not mouse cortex.",
  "cite_key": "Kim2025b",
  "evidence": "Monkey PFC recordings + RNN match; perturbation of reversal-probability subspace in RNN biased choices — functional significance.",
  "effect_size": "stationary line-attractor state at trial start; separable non-stationary trajectories during trial",
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  "study_system": "Monkey PFC + RNNs (cross-species synthesis)",
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  "claim_source_sentence": "We found that in a neural subspace encoding reversal probability, its activity represented integration of reward outcomes as in a line attractor model. The reversal probability activity at the start of a trial was stationary, stable, and consistent with the attractor dynamics.",
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  "effect_size_source_sentence": "The reversal probability activity at the start of a trial was stationary, stable, and consistent with the attractor dynamics."
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We found that in a neural subspace encoding reversal probability, its activity represented integration of reward outcomes as in a line attractor model. The reversal probability activity at the start of a trial was stationary, stable, and consistent with the attractor dynamics.

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