Increased neuron density in the midbrain of a foveate bird, pigeon, results from profound change in tissue morphogenesis

 

Developmental Biology (2023) : 77-98: https://doi.org/10.1016/j.ydbio.2023.06.021 ; October 2023.

Graphical Abstract

A figure containing the graphical abstract of the publication

Highlights

 

  • The advent of the fovea was a breakthrough innovation in bird evolution.
  • Foveal vision requires increased neuron densities in the optic tectum.
  • Neuron densities are different when the foveae are deep or shallow.
  • Ganglion cell densities are higher in the shallow foveae than in the deep ones.

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