Runita Shirdhankar
runitas.bsky.social
Runita Shirdhankar
@runitas.bsky.social
PhD candidate @mpinb.mpg.de‬ | Interested in understanding Navigation in the Subterranean World of Rodents
Reposted by Runita Shirdhankar
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)
www.biorxiv.org
January 28, 2026 at 10:03 AM
Reposted by Runita Shirdhankar
New paper out in G3 @genetics-gsa.bsky.social academic.oup.com/g3journal/ar... We (@dkfz.bsky.social) present the first genome assembly of Ansell's mole-rat (Fukomys anselli) bringing it one step closer to becoming a model species. Ansell's mole-rat is long-lived, cancer resistant and highly social.
De novo genome assembly of Ansell's mole-rat (Fukomys anselli)
Abstract. Ansell's mole-rat (Fukomys anselli) is an African rodent known for its subterranean lifestyle and unique phenotypic traits, including extreme lon
academic.oup.com
January 8, 2026 at 8:32 AM
Reposted by Runita Shirdhankar
Our new preprint is now live on bioRxiv: www.biorxiv.org/content/10.6...

We established neuronal recordings in freely moving subterranean mammals, enabling functional studies of brains in extreme ecological niches. 🚀

#neuroscience #molerats #neuropixels
Neuronal recordings in head-fixed and freely-moving mole-rats
Mole-rats are subterranean rodents that have evolved remarkable sensory adaptations to life in underground tunnel systems, yet their neural mechanisms remain largely unexplored. Here, we present a pro...
www.biorxiv.org
December 18, 2025 at 8:04 AM
Reposted by Runita Shirdhankar
New paper out in Mammalian Biology:
Walking backwards, as impractical as it may seem, is mastered by the Ansell's mole-rat (Fukomys anselli). In this study, we showed that mole-rats can walk backwards and forwards with equal ease. This is likely an adaptation to their subterranean habitat.
November 20, 2025 at 12:57 PM
Reposted by Runita Shirdhankar
I am excited to share my PhD work on head-direction cells recorded in the wild, now published in @science.org, where we recorded neurons in bats flying outdoors on an island.

doi.org/10.1126/sci...

With @ray-neuro.bsky.social, Shir Maimon, Liora Las, Nachum Ulanovsky and many others
October 16, 2025 at 6:04 PM
Reposted by Runita Shirdhankar
Obituary: Jane Goodall (1934-2025) Pioneer primatologist who inspired generations of scientists

go.nature.com/48aWjRU
Jane Goodall obituary: pioneer primatologist who inspired generations of scientists
She was a tireless advocate for conservation, the welfare of captive chimpanzees and the protection of habitats.
go.nature.com
October 6, 2025 at 10:06 AM
Reposted by Runita Shirdhankar
1/8
How can the brain create countless unique memories using a single, universal metric of space? We’ve been waiting for the answer to this for two decades!
Read it here:
www.biorxiv.org/content/10.1...
September 25, 2025 at 4:15 AM
Reposted by Runita Shirdhankar
Head direction cells use a head-referenced dual-axis updating rule in 3D space https://www.biorxiv.org/content/10.1101/2025.09.17.676760v1
September 17, 2025 at 8:16 PM
Reposted by Runita Shirdhankar
1/
🚨 New preprint! 🚨

Excited and proud (& a little nervous 😅) to share our latest work on the importance of #theta-timescale spiking during #locomotion in #learning. If you care about how organisms learn, buckle up. 🧵👇

📄 www.biorxiv.org/content/10.1...
💻 code + data 🔗 below 🤩

#neuroskyence
September 17, 2025 at 7:33 PM