Pieter Goltstein
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xpieter.bsky.social
Pieter Goltstein
@xpieter.bsky.social
Yes 😁 here is a link to the bsky thread 🧵 bsky.app/profile/xpie...
Can the mouse visual cortex harbor a functional organization for stimulus features? TLDR: Yes, we found ocular dominance columns in this tiny cortical region! Check our paper, open access in @naturecomms.bsky.social www.nature.com/articles/s41... and/or read the 🧵 below. @mpiforbi.bsky.social (1/7)
February 26, 2025 at 10:49 AM
And here the rotating version of the image (1b/7)
February 25, 2025 at 11:09 AM
So, it turns out that the mouse visual cortex has a columnar organization for ocular dominance! But what might be the function of such columns in general? We hope that our work inspires further investigation of the molecular, circuits and behavioral aspects of that question. (7/7)
A column-like organization for ocular dominance in mouse visual cortex - Nature Communications
This study reports clusters of ipsilateral eye preferring neurons in layer 4 of mouse visual cortex, extending into layer 2/3 and upper layer 5. This column-like pattern for ocular dominance expands o...
www.nature.com
February 25, 2025 at 10:57 AM
What else? Well, in larger mammals, the spatial arrangement of ocular dominance is related to the retinotopic and other feature maps. Interestingly, in mice we could not detect such relationships. (6/7)
February 25, 2025 at 10:55 AM
Moreover, the clusters we identified in layer 4 extended vertically into layers 2/3 and 5, forming a columnar organization. (5/7)
February 25, 2025 at 10:52 AM
We identified the location of these ipsi-patches using a clustering algorithm. But did the data just “type out Shakespeare” by chance? No, neither randomized nor simulated data showed similar spatial distributions for ocular dominance. (4/7)
February 25, 2025 at 10:50 AM
As expected, there was a retinotopic map, but to our surprise, when we inspected the ‘visual response maps’ we also observed clear patches with mostly ipsilateral eye driven responses in layer 4. (3/7)
February 25, 2025 at 10:48 AM
How did we find them? Using 2-photon microscopy, we mapped functional properties like retinotopy, orientation tuning, and ocular dominance across a large part of the mouse visual cortex. (2/7)
February 25, 2025 at 10:45 AM