Scene statistics and noise determine the relative arrangement of receptive field mosaics.

Journal Article (Journal Article)

Many sensory systems utilize parallel ON and OFF pathways that signal stimulus increments and decrements, respectively. These pathways consist of ensembles or grids of ON and OFF detectors spanning sensory space. Yet, encoding by opponent pathways raises a question: How should grids of ON and OFF detectors be arranged to optimally encode natural stimuli? We investigated this question using a model of the retina guided by efficient coding theory. Specifically, we optimized spatial receptive fields and contrast response functions to encode natural images given noise and constrained firing rates. We find that the optimal arrangement of ON and OFF receptive fields exhibits a transition between aligned and antialigned grids. The preferred phase depends on detector noise and the statistical structure of the natural stimuli. These results reveal that noise and stimulus statistics produce qualitative shifts in neural coding strategies and provide theoretical predictions for the configuration of opponent pathways in the nervous system.

Full Text

Duke Authors

Cited Authors

  • Jun, NY; Field, GD; Pearson, J

Published Date

  • September 28, 2021

Published In

Volume / Issue

  • 118 / 39

PubMed ID

  • 34556573

Pubmed Central ID

  • PMC8488585

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

Digital Object Identifier (DOI)

  • 10.1073/pnas.2105115118

Language

  • eng

Conference Location

  • United States