We are looking very much forward to our next guest within the RTG2416 Seminar Series Dr. Maximilian Jösch from the IST Austria.
He will teach us about “Retinal adaptation to the global structure of natural scenes” on this Thursday, the 10th of June 2021 at 5:15 pm (CET).
What will the alk be about? Here’s a short abstract:
Visual information is carried by ~30-40 different retinal ganglion cell (RGC) types from the retina to the brain, each encoding distinct visual features in parallel. Although retinotopic specializations have been observed in some RGC-types, the general assumption is that they relay a uniform representation across the visual space. However, natural scene statistics strongly vary across the dorso-ventral axis imposing constraints on efficient information transmission across all cell types. Here we set out to explore the uniformity of retinotopic properties to define visual adaptations. Contrary to general belief, our data revealed a shared topographic variation of functional properties according to the predictive coding hypothesis. Whereas most RGCs present a strong center-surround antagonism in the most ventral retina, the relative strength gradually declines towards the dorsal part, reflecting directly the measured change in luminance observed in natural scenes. In line with theoretical predictions, we observe a robust ventral shift of the surround, irrespective of RGC type, precisely at the horizon. Overall, our results indicate that the diverse computations relayed by RGCs have adapted globally within the retina, to fit the requirements imposed by local natural scene statistics.
Please contact Oke Nommensen for Details on the Zoom Meeting
Click here to learn more about Dr, Jösch’s research.
Please find the announcement here.
We are looking forward to see you!
*An event funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – 368482240/GRK2416