ArticleNeuroscience letters2015
Parallel sparse and dense information coding streams in the electrosensory midbrain.
Article in Neuroscience letters, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Burst firing optimizes invariant coding of natural communication signals by electrosensory neural populations.iScience · 2025Article
- Fractional order memcapacitive neuromorphic elements reproduce and predict neuronal function.Scientific reports · 2024Article
- Population Coding of Natural Electrosensory Stimuli by Midbrain Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Neural Synchrony Gives Rise to Amplitude- and Duration-Invariant Encoding Consistent With Perception of Natural Communication Stimuli.Frontiers in neuroscience · 2020Article
- Encoding and Perception of Electro-communication Signals inFrontiers in integrative neuroscience · 2019Review
- Novel Functions of Feedback in Electrosensory Processing.Frontiers in integrative neuroscience · 2019Article
- Optimal dynamic coding by mixed-dimensionality neurons in the head-direction system of bats.Nature communications · 2018Article
- Descending pathways generate perception of and neural responses to weak sensory input.PLoS biology · 2018Article
- Population Coding and Correlated Variability in Electrosensory Pathways.Frontiers in integrative neuroscience · 2018Review
- Electrosensory neural responses to natural electro-communication stimuli are distributed along a continuum.PloS one · 2017Article
- Optimized Parallel Coding of Second-Order Stimulus Features by Heterogeneous Neural Populations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016Article
- Adaptation to second order stimulus features by electrosensory neurons causes ambiguity.Scientific reports · 2016Article
- Neural correlations enable invariant coding and perception of natural stimuli in weakly electric fish.eLife · 2016Article
- Burst Firing in the Electrosensory System of Gymnotiform Weakly Electric Fish: Mechanisms and Functional Roles.Frontiers in computational neuroscience · 2016Review
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Efficient processing of incoming sensory information is critical for an organism's survival. It has been widely observed across systems and species that the representation of sensory information changes across successive brain areas. Indeed, peripheral sensory neurons tend to respond densely to a broad range of sensory stimuli while more central neurons tend to instead respond sparsely to a narrow range of stimuli. Such a transition might be advantageous as sparse neural codes are thought to be metabolically efficient and optimize coding efficiency. Here we investigated whether the neural code transitions from dense to sparse within the midbrain Torus semicircularis (TS) of weakly electric fish. Confirming previous results, we found both dense and sparse coding neurons. However, subsequent histological classification revealed that most dense neurons projected to higher brain areas. Our results thus provide strong evidence against the hypothesis that the neural code transitions from dense to sparse in the electrosensory system. Rather, they support the alternative hypothesis that higher brain areas receive parallel streams of dense and sparse coded information from the electrosensory midbrain. We discuss the implications and possible advantages of such a coding strategy and argue that it is a general feature of sensory processing.
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