Horst Obenhaus
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octoscience.bsky.social
Horst Obenhaus
@octoscience.bsky.social
PostDoc at the Kavli Institute for Systems Neuroscience at NTNU Trondheim. Whitman Scientist at the Marine Biological Laboratory (MBL) in Woods Hole, MA. I am studying sleep in octopuses and cuttlefish. 🐙
Reposted by Horst Obenhaus
For the first time ever, INSS will have a booth at SfN this year. Please come and say hello at Booth #3327
Would be lovely to see some familiar faces!
November 6, 2025 at 5:38 PM
Reposted by Horst Obenhaus
I wrote a thing on episodic memory and systems consolidation. I hope you all enjoy it and/or find it interesting.

A neural state space for episodic memories

www.sciencedirect.com/science/arti...

#neuroskyence #psychscisky #cognition 🧪
A neural state space for episodic memories
Episodic memories are highly dynamic and change in nonlinear ways over time. This dynamism is not captured by existing systems consolidation theories …
www.sciencedirect.com
November 3, 2025 at 12:56 PM
Reposted by Horst Obenhaus
Huge congratulations to the @BrainGlobe.info team for winning the 2025 International Prize awarded by the @theneuro.bsky.social and Helga Cooper Foundation Open Science Prizes Selection Committee 🎉

www.sainsburywellcome.org/web/research...
October 9, 2025 at 2:11 PM
Reposted by Horst Obenhaus
Insect spatial memory is thought to be based on panoramic snapshots that are modelled as retinotopic images. This idea won't allow a distinction of landmarks from the scene. Unexpectedly, our data suggest that 🐝 learn 3D-objects as individual landmarks. #neuroethology
www.biorxiv.org/content/10.1...
September 28, 2025 at 10:54 AM
Reposted by Horst Obenhaus
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 Horst Obenhaus
Excited to release the SPOT grid: a new image set that factorially crosses scene-object & texture-pattern pairings.

We hope these stimuli will be useful to researchers aiming to (partially) disentangle the contributions of lower- and higher-level visual features to behavior & brain activity.

1/
September 22, 2025 at 7:34 PM
The curtain test! ((:
I LOVE their curtain test!!
September 18, 2025 at 5:49 PM
Reposted by Horst Obenhaus
🚨New preprint alert!

The thalamus has long been seen as a relay of sensory signals to cortex.
But could it also generate its own structured activity?
Our study explores this question in the head-direction (HD) system.

Some explanation 🧵👇 1/13

www.biorxiv.org/content/10.1...
Coherent dynamics of thalamic head-direction neurons irrespective of input
While the thalamus is known to relay and modulate sensory signals to the cortex, whether it also participates in active computation and intrinsic signal generation remains unresolved. The anterodorsal...
www.biorxiv.org
September 16, 2025 at 3:56 PM
Come to the MBL in Woods Hole @mblscience.bsky.social for a GRASS FELLOWSHIP @grassfoundation.bsky.social 🦑 🐙🐛
There are two application deadlines this year: Oct 15, 2025 (submit by then to receive feedback on your application!), and Dec 1, 2025 (final deadline). grassfoundation.org/application-...
September 11, 2025 at 5:56 PM
Reposted by Horst Obenhaus
Application is open! Come join us and our fantastic line-up of speakers next year in March in Bonn!
September 8, 2025 at 12:00 PM
Reposted by Horst Obenhaus
We just published our third major funding application, including the evaluation it received, for the benefit of future applicants 🙌

Because #OpenScience is also about sharing ideas and examples that others can learn from 🌟

www.ogrants.org/grants/jacob...
Funding application (RCN, 2024): Deciphering bioluminescent communication in marine annelids · Open Grants
www.ogrants.org
September 4, 2025 at 12:45 PM
Reposted by Horst Obenhaus
Check our new preprint where we examine how enriched experiences alter synaptic connectivity and coding sparsity across the neocortex.
Enriched experience increases reciprocal synaptic connectivity and coding sparsity in higher-order cortex https://www.biorxiv.org/content/10.1101/2025.09.01.673156v1
September 3, 2025 at 2:14 PM
Impressive design!! Repeatability and precision are shown in sample microscopy stage and by laser->fiber coupling. Check it out.

Open Source Motorized XYZ Micro-Manipulator - Affordable sub µm Motion Control
www.youtube.com/watch?v=MgQb...

Github: github.com/0x23/MicroMa...
www.youtube.com
August 31, 2025 at 1:02 PM
Reposted by Horst Obenhaus
Goal-directed hippocampal theta sweeps during memory-guided navigation https://www.biorxiv.org/content/10.1101/2025.08.26.672489v1
August 27, 2025 at 7:15 AM
One of the “golden videos” that I took during my Grass Fellowship @grassfoundation.bsky.social - active sleep in these little guys is so obvious and flamboyant! @mblscience.bsky.social
🐙 This Octopus shifts from deep to active rest while "dreaming" for #MicroscopyMonday. REM‑like sleep (color bursts and twitches) filmed in real time by Horst Obenhaus @octoscience.bsky.social‬, currently a 2025 Whitman Fellow at @mblscience.bsky.social. #NESM

#Octopus #Neuro #SleepScience #MBL
July 21, 2025 at 1:52 PM
Reposted by Horst Obenhaus
Our new paper out now in Science explores how neural activity in the lateral entorhinal cortex (LEC) *drifts* over time - and *jumps* at key boundaries - to help organize events in memory.

🔗 www.science.org/doi/10.1126/...

Here's a quick summary of what we found 🧵👇
June 26, 2025 at 6:15 PM
Reposted by Horst Obenhaus
📯We, the Poirazi Lab at IMBB-FORTH, are thrilled to announce an open PhD Student position!

🗝️Key Research Areas: AI, Machine Learning, Brain-Inspired Computing, Neuronal Circuits.

📅Application Deadline: July 7, 2025.

Find out more about the position on our webpage: dendrites.gr?p=2825
Join the Poirazi Lab: Open PhD Student position! – Poirazi LabBlueskyEmailFacebookGitHubTwitter
dendrites.gr
June 24, 2025 at 9:49 AM
Reposted by Horst Obenhaus
New blog post with a review of interesting papers on VIP interneurons in cortex and hippocampus: gcamp6f.com/2025/06/23/i...
Covering work from @koenvervaeke.bsky.social's lab with @mateneubrandt.bsky.social, Yoav Adam's lab and Bernardo Rudy's lab.
June 23, 2025 at 1:04 PM
Reposted by Horst Obenhaus
#neuroskyence folks: as my postdoc grant is running out soon, I am looking for new opportunities in systems neuroscience!

Keywords: patch clamp ephys, opto, mouse behavior, (in vivo) voltage imaging. Would love to return to the Basal Ganglia.

Sharing appreciated, and happy #FluorescenceFriday !
June 13, 2025 at 1:33 PM
💡
In short: LFPs carry rich circuit information.
We mapped oscillations and neuronal firing across CA1–DG layers.
This opens new doors for identifying oscillations, circuit motifs, and homogenize layer identification across datasets.
Check out the paper: doi.org/10.1016/j.ce...

(11/13)
Redirecting
doi.org
June 5, 2025 at 5:30 PM
Reposted by Horst Obenhaus
Reposted by Horst Obenhaus
There is no binding problem because vision—and cortex more broadly—is not modular. Phrenological theories create phrenological artifacts.
Beyond binding: from modular to natural vision
doi.org/10.1016/j.ti...
#neuroscience
Redirecting
doi.org
June 3, 2025 at 7:55 PM
I am looking for #python programming tutorials for undergraduates. What are the most accessible / up-to-date courses out there? Bonus points for neuroscience / data analysis focus.
June 3, 2025 at 2:05 AM
Reposted by Horst Obenhaus
Advances in #MachineLearning, #Genetics and more can revolutionize neuroethology. Learn more at India | EMBO Lecture Course "Neuroethology: How the brain controls natural behaviours" in Pune, IN, 7–11 Dec

Deadline: 31 Jul

meetings.embo.org/event/25-neu...
#EMBOneuroethology #GeneSky #EMBOevents 🧪
Neuroethology: How the brain controls natural behaviours
Neuroethology, the study of the neural mechanisms underlying natural behaviours, has faced challenges due to the complexity of behaviours, limitations in genetic manipulation, and recording constrai…
meetings.embo.org
May 28, 2025 at 12:33 PM