Short Wavelengths Contribution to Light-induced Responses and Irradiance Coding in the Rat Dorsal Lateral Geniculate Nucleus - An In vivo Electrophysiological Approach

Jagoda Stanislawa Jeczmien-Lazur, Patrycja Orlowska-Feuer, Anna Kustron, Marian Henryk Lewandowski

Research output: Contribution to journalArticlepeer-review

41 Downloads (Pure)

Abstract

The dorsal lateral geniculate nucleus (dLGN) is the main neuronal station en route to higher visual areas. It receives information about environmental light from retinal photoreceptors whose sensitivity peaks are distributed across a visible spectrum. Here, using electrophysiological multichannel recordings in vivo combined with different light stimulations, we investigated short wavelength contribution to the dLGN responses to light and irradiance coding. The results showed that the majority of dLGN cells responded evenly to almost all wavelengths from the 340 to 490 nm spectrum; however, some cells representing extremes of unimodal distribution of Blue-UV index were specialised in the reception of blue or UV light. Moreover, by using alternate yellow and monochromatic light stimuli from blue - UV range, we also assessed the relative spectral contribution to rat dLGN responses to light. Finally, we observed no clear changes in the irradiance coding property of short wavelength-deficient light stimuli, however we noticed a distortion of the coding curves manifested by a significant drop in measure of fit after using short wavelength blocking filter. In conclusion, our data provide the first electrophysiological report on dLGN short wavelength-induced responses under changing light conditions and suggest the presence of colour opponent cells in the rat dLGN.

Original languageEnglish
Pages (from-to)220-234
Number of pages15
JournalNeuroscience
Volume468
Early online date17 Jun 2021
DOIs
Publication statusPublished - 1 Aug 2021

Keywords

  • UV light
  • blue light
  • dLGN
  • light sensitivity
  • rat

Fingerprint

Dive into the research topics of 'Short Wavelengths Contribution to Light-induced Responses and Irradiance Coding in the Rat Dorsal Lateral Geniculate Nucleus - An In vivo Electrophysiological Approach'. Together they form a unique fingerprint.

Cite this