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Working memory in jackdaws shows biases similar to humans. Discrete attractor dynamics help mitigate noise, suggesting a general biological principle for efficient working memory across species.

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Area of Science:

  • Cognitive neuroscience
  • Comparative psychology
  • Avian cognition

Background:

  • Working memory (WM) is vital for higher cognition but has limited capacity and is susceptible to noise.
  • In primates, attractor dynamics discretize information to reduce noise, but this is not well-understood in avian brains.

Purpose of the Study:

  • To investigate if avian brains, specifically jackdaws (Corvus monedula), exhibit similar attractor dynamics in working memory as primates.
  • To understand how working memory functions in a species evolutionarily distant from primates.

Main Methods:

  • Behavioral experiments measuring memory precision and bias in jackdaws under varying memory loads.
  • Model-based analysis to identify underlying neural dynamics, specifically attractor states.

Main Results:

  • Jackdaws exhibit behavioral biases in memory that worsen with increased memory demand, mirroring human patterns.
  • Analysis revealed discrete attractors evenly distributed across the stimulus space in jackdaw working memory.

Conclusions:

  • Attractor dynamics are present in jackdaw working memory, mitigating noise by guiding memory representations towards specific states.
  • This finding supports attractor dynamics as a general, adaptive biological principle for efficient working memory, extending beyond primates to evolutionarily distant species like corvids.