Cones with character: An in vivo circuit implementation of efficient coding
Schedule
Tuesday, November 10, 2020
13:30 UTC
Tom Baden
University of Sussex
Host: IST Neuroscience
Recording
Open recording
Event Information
Recording
Available
Host
IST Neuroscience
Duration
70 minutes
Abstract
In this talk I will summarize some of our recent unpublished work on spectral coding in the larval zebrafish retina. Combining 2p imaging, hyperspectral stimulation, computational modeling and connectomics, we take a renewed look at the spectral tuning of cone photoreceptors in the live eye. We find that already cones optimally rotate natural colour space in a PCA-like fashion to disambiguate greyscale from "colour" information. We then follow this signal through the retinal layers and ultimately into the brain to explore the major spectral computations performed by the visual system at its consecutive stages. We find that by and large, zebrafish colour vision can be broken into three major spectral zones: long wavelength grey-scale-like vision, short-wavelength prey capture circuits, and spectrally diverse mid-wavelength circuits which possibly support the bulk of "true colour vision" in this tetrachromate vertebrate.
Topics
Related Job Opportunities
JobJobJob
PhD Studentship: Mitochondrial Metabolism and Novel Therapeutic Strategies for Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) (Fixed Term)
A fully funded University of Cambridge PhD studentship, supported by Novo Nordisk, will investigate how mitochondrial metabolism changes during metabolic dysfunction-associated steatotic liver…
Posted Aug 10, 2026
Research Associate (Fixed Term)
Kathy Niakan's laboratory at the Loke Centre for Trophoblast Research is recruiting a postdoctoral researcher to study early lineage specification in human pre- and early post-implantation embryos.…
Posted Aug 11, 2026
Cambridge, United Kingdom
Research Assistant/Associate (Fixed Term)
A fixed-term research position in the laboratories of Ole Paulsen and Jasper Poort will study neural mechanisms of visual learning in mice. The project combines patch-clamp electrophysiology…
Posted Aug 11, 2026
Cambridge, United Kingdom