ArticleCommunications biology2023
Working memory performance is tied to stimulus complexity.
Article in Communications biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Simultaneous encoding of sensory features: the role of multiplexing and noise in tactile perception and neural representation.Biological reviews of the Cambridge Philosophical Society · 2026Review
- Conscious birds.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- The Distribution of Nitric Oxide-Synthesizing Neurons and Soluble Guanylate Cyclase in Relation to Dopaminergic Systems in the Pigeon Brain.The Journal of comparative neurology · 2025Article
- A toolbox for generating multidimensional 3D objects with fine-controlled feature space: Quaddle 2.0.Behavior research methods · 2025Article
- Article
- Adaptive chunking improves effective working memory capacity in a prefrontal cortex and basal ganglia circuit.bioRxiv : the preprint server for biology · 2024Article
- Balanced anesthesia in pigeons (Frontiers in physiology · 2024Article
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Authors and funding
8 authors.
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Abstract
Working memory is the cognitive capability to maintain and process information over short periods. Behavioral and computational studies have shown that visual information is associated with working memory performance. However, the underlying neural correlates remain unknown. To identify how visual information affects working memory performance, we conducted behavioral experiments in pigeons (Columba livia) and single unit recordings in the avian prefrontal analog, the nidopallium caudolaterale (NCL). Complex pictures featuring luminance, spatial and color information, were associated with higher working memory performance compared to uniform gray pictures in conjunction with distinct neural coding patterns. For complex pictures, we found a multiplexed neuronal code displaying visual and value-related features that switched to a representation of the upcoming choice during a delay period. When processing gray stimuli, NCL neurons did not multiplex and exclusively represented the choice already during stimulus presentation and throughout the delay period. The prolonged representation possibly resulted in a decay of the memory trace ultimately leading to a decrease in performance. In conclusion, we found that high stimulus complexity is associated with neuronal multiplexing of the working memory representation possibly allowing a facilitated read-out of the neural code resulting in enhancement of working memory performance.
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