PUBLICATION

Neural circuitry for stimulus selection in the zebrafish visual system

Authors
Fernandes, A.M., Mearns, D.S., Donovan, J.C., Larsch, J., Helmbrecht, T.O., Kölsch, Y., Laurell, E., Kawakami, K., Dal Maschio, M., Baier, H.
ID
ZDB-PUB-201229-12
Date
2020
Source
Neuron   109(5): 805-822.e6 (Journal)
Registered Authors
Baier, Herwig, Kawakami, Koichi
Keywords
behavioral choice, isthmotectal, nucleus isthmi, parabigeminal nucleus, retinotectal, saliency, stimulus selection, visual system
MeSH Terms
  • Tectum Mesencephali/physiology
  • Animals
  • Optogenetics
  • Visual Pathways/physiology*
  • Retina/physiology
  • Photic Stimulation
  • Visual Perception/physiology*
  • Models, Neurological
  • Behavior, Animal
  • Attention/physiology*
  • Zebrafish
(all 11)
PubMed
33357384 Full text @ Neuron
Abstract
When navigating the environment, animals need to prioritize responses to the most relevant stimuli. Although a theoretical framework for selective visual attention exists, its circuit implementation has remained obscure. Here we investigated how larval zebrafish select between simultaneously presented visual stimuli. We found that a mix of winner-take-all (WTA) and averaging strategies best simulates behavioral responses. We identified two circuits whose activity patterns predict the relative saliencies of competing visual objects. Stimuli presented to only one eye are selected by WTA computation in the inner retina. Binocularly presented stimuli, on the other hand, are processed by reciprocal, bilateral connections between the nucleus isthmi (NI) and the tectum. This interhemispheric computation leads to WTA or averaging responses. Optogenetic stimulation and laser ablation of NI neurons disrupt stimulus selection and behavioral action selection. Thus, depending on the relative locations of competing stimuli, a combination of retinotectal and isthmotectal circuits enables selective visual attention.
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Mutations / Transgenics
Allele Construct Type Affected Genomic Region
a13203TgTransgenic Insertion
    c264TgTransgenic Insertion
      mpn101TgTransgenic Insertion
        mpn134TgTransgenic Insertion
          mpn155TgTransgenic Insertion
            mpn163TgTransgenic Insertion
              mpn164TgTransgenic Insertion
                mpn165TgTransgenic Insertion
                  mpn170TgTransgenic Insertion
                    mpn202TgTransgenic Insertion
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                      Antibodies
                      Name Type Antigen Genes Isotypes Host Organism
                      Ab1-chatpolyclonalGoat
                      Ab1-relnmonoclonalIgG1Mouse
                      Ab3-thmonoclonalIgG1Mouse
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                      Engineered Foreign Genes
                      Marker Marker Type Name
                      DendraEFGDendra
                      DsRedEFGDsRed
                      EGFPEFGEGFP
                      EYFPEFGEYFP
                      GAL4EFGGAL4
                      GAL4FFEFGGAL4FF
                      GCaMPEFGGCaMP
                      GFPEFGGFP
                      HaloTagEFGHaloTag
                      KaedeEFGKaede
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                      Citation
                      Fernandes, A.M., Mearns, D.S., Donovan, J.C., Larsch, J., Helmbrecht, T.O., Kölsch, Y., Laurell, E., Kawakami, K., Dal Maschio, M., Baier, H. (2020) Neural circuitry for stimulus selection in the zebrafish visual system. Neuron. 109(5):805-822.e6.