Nonlinear receptive fields evoke redundant retinal coding of natural scenes

Dimokratis Karamanlis (), Mohammad H. Khani, Helene M. Schreyer, Sören J. Zapp, Matthias Mietsch and Tim Gollisch ()
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Dimokratis Karamanlis: Department of Ophthalmology
Mohammad H. Khani: Department of Ophthalmology
Helene M. Schreyer: Department of Ophthalmology
Sören J. Zapp: Department of Ophthalmology
Matthias Mietsch: Laboratory Animal Science Unit
Tim Gollisch: Department of Ophthalmology

Nature, 2025, vol. 637, issue 8045, 394-401

Abstract: Abstract The role of the vertebrate retina in early vision is generally described by the efficient coding hypothesis1,2, which predicts that the retina reduces the redundancy inherent in natural scenes3 by discarding spatiotemporal correlations while preserving stimulus information4. It is unclear, however, whether the predicted decorrelation and redundancy reduction in the activity of ganglion cells, the retina’s output neurons, hold under gaze shifts, which dominate the dynamics of the natural visual input5. We show here that species-specific gaze patterns in natural stimuli can drive correlated spiking responses both in and across distinct types of ganglion cells in marmoset as well as mouse retina. These concerted responses disrupt redundancy reduction to signal fixation periods with locally high spatial contrast. Model-based analyses of ganglion cell responses to natural stimuli show that the observed response correlations follow from nonlinear pooling of ganglion cell inputs. Our results indicate cell-type-specific deviations from efficient coding in retinal processing of natural gaze shifts.

Date: 2025
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DOI: 10.1038/s41586-024-08212-3

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