Edvard I Moser

@edvardmoser.bsky.social

Scientific Co-Director and Professor at Kavli Institute for Systems Neuroscience, NTNU, Norway. Neural network computation, grid cells. Nobel Prize Physiology-Medicine 2014.

A half-century old question may have its final answer. Using high-resolution #Mini2P microscopes, we find no evidence of local topography in #PlaceCells. Place fields of neighbouring cells are no more similar than those of randomly selected cells. 🧠🗺️ Out now in @pnas.org www.pnas.org/doi/10.1073/...

Place cells in CA1 lack topographical organization of firing locations | PNAS

Topography is a well-described and well-known concept for cortical organization in primary sensory and motor cortices of mammalian brains. Similar ...

pnas.org

I recommend this school to anyone interested in computation in the brain - it receives excellent reviews year after year, it is highly interactive and social, and the setting is remarkable.

Soledad Gonzalo Cogno@soledad-gcogno.bsky.social · 6mo ago

Applications are now open for the summer school: 𝐌𝐚𝐭𝐡𝐞𝐦𝐚𝐭𝐢𝐜𝐚𝐥 𝐌𝐞𝐭𝐡𝐨𝐝𝐬 𝐢𝐧 𝐂𝐨𝐦𝐩𝐮𝐭𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐍𝐞𝐮𝐫𝐨𝐬𝐜𝐢𝐞𝐧𝐜𝐞 🧠 Apply before March 15: www.compneuronrsn.org 📍 Located in beautiful Eresfjord 🇳🇴 🗓️ Between July 6-24 Supported by the @kavlifoundation.org In collaboration with @kavlintnu.bsky.social

The hippocampal map has its own attentional control signal! Our new study reveals that theta #sweeps can be instantly biased towards behaviourally relevant locations. See 📹 in post 4/6 and preprint here 👉 www.biorxiv.org/content/10.6... 🧵(1/6)

Attention-like regulation of theta sweeps in the brain's spatial navigation circuit

Spatial attention supports navigation by prioritizing information from selected locations. A candidate neural mechanism is provided by theta-paced sweeps in grid- and place-cell population activity, which sample nearby space in a left-right-alternating pattern coordinated by parasubicular direction signals. During exploration, this alternation promotes uniform spatial coverage, but whether sweeps can be flexibly tuned to locations of particular interest remains unclear. Using large-scale Neuropixels recordings in freely-behaving rats, we show that sweeps and direction signals are rapidly and dynamically modulated: they track moving targets during pursuit, precede orienting responses during immobility, and reverse during backward locomotion — without prior spatial learning. Similar modulation occurs during REM sleep. Canonical head-direction signals remain head-aligned. These findings identify sweeps as a flexible, attention-like mechanism for selectively sampling allocentric cognitive maps. ### Competing Interest Statement The authors have declared no competing interest. European Research Council, Synergy Grant 951319 (EIM) The Research Council of Norway, Centre of Neural Computation 223262 (EIM, MBM), Centre for Algorithms in the Cortex 332640 (EIM, MBM), National Infrastructure grant (NORBRAIN, 295721 and 350201) The Kavli Foundation, https://ror.org/00kztt736 Ministry of Science and Education, Norway (EIM, MBM) Faculty of Medicine and Health Sciences; NTNU, Norway (AZV)

biorxiv.org

Kudos to Minister Sigrun Aasland @kd.regjeringen.no for scrapping the language requirement for international PhD students and postdocs. I was interviewed by @nature.com about this decision that strengthens recruitment in a country where 75% of postdocs are from abroad. www.nature.com/articles/d41...

Norway set to scrap mandatory language training for foreign postdocs and PhD students

Researchers jubilant over swift ministerial response to rule they say would hamper international recruitment.

nature.com

Watch out for this guy; this is just the beginning. Many more breakthroughs to be expected! Congratulations, Weijian!

Kavli Institute for Systems Neuroscience@kavlintnu.bsky.social · 2y ago

Congratulations to the brilliant Weijian Zong, who today received a FRIPRO grant by The Research Council of Norway for the miniature microscope #Mini2P, that allows researchers to see 👀 cognitive functions emerge from thousands of collaborating neurons in the brain 🧠 of a freely behaving mouse!

A poster of Weijian Zong, recipient of a FRIPRO grant for early career researchers by the Research Council of Norway, for the invention and further development of the brain exploration microscope the MINI2P