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Roddy Grieves

@roddy-grieves.bsky.social
335 followers 311 following 139 posts

Cognition | Navigation | Behaviour I study how the brain maps space - how this map is influenced by the environment & an animals's behaviour. Currently starting my own research group: the Neuroethology and Spatial Cognition lab @ University of Glasgow

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Roddy Grieves @roddy-grieves.bsky.social · 10/08/2026
@noldusit.bsky.social I don't think AI understands how jigsaw pieces work yet...
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Roddy Grieves @roddy-grieves.bsky.social · 05/08/2026
Journal editors creating PDF layouts where the text is on page 5, Figure 1 is on page 30, and the legend is on page 42:
static.klipy.com
I Want To Kill The Unicorn
ALT: I Want To Kill The Unicorn
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Roddy Grieves @roddy-grieves.bsky.social · 02/07/2026
During sleep, neurons in the hippocampus 'replay' past activity patterns. This is thought to underlie memory consolidation 🧠 After a busy day, how does the brain sort out what is worth replaying? 🤔 Check out this preprint 📃 from Tirole, Duvelle and Bendor for answers! doi.org/10.64898/202...
doi.org
Time, but not reward, shapes replay-based episodic prioritization
Why are some experiences remembered better than others? Leading theories propose that hippocampal replay prioritizes memories for consolidation according to their expected future value. We recorded hi...
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Hugo Spiers @hugospiers.bsky.social · 04/06/2026
Hillscape cells: Hippocampal place cells map terrain geometry independently of behavior #neuroskyence @roddy-grieves.bsky.social Eleonore Duvelle and Jeff Taube: www.science.org/doi/10.1126/...
science.org
Hippocampal place cells map terrain geometry independently of behavior
Place cells map terrain geometry, not behavior, revealing a surface-based brain code for real-world navigation.
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Roddy Grieves @roddy-grieves.bsky.social · 05/06/2026
Ever wonder how your brain navigates the real world? 🧠 Most spatial navigation studies use flat, 2D mazes. But the real world is hilly, irregular, and bumpy! ⛰️ Our new paper in #ScienceAdvances asked a simple question: How does the brain map uneven terrain? 📄 doi.org/10.1126/scia... 🧵👇️️️ 1/
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International Conference On Memory 26-30 July 2027 in Glasgow @icom-memory.bsky.social · 22/05/2026
We've now highlighted all our amazing confirmed keynote speakers! Please sign up to our email list as this will be the main way we will communicate. Stay tuned for news about submissions, registration, and lots more! icom-memory.org #neuroskyence #psychscisky #cognition #ICOM2027 #philosophysky 🧪
icom-memory.org
ICOM - International Conference on Memory 2027
The International Conference on Memory 2027, will be held in Glasgow, Scotland between 26 - 30 July 2027.
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International Conference On Memory 26-30 July 2027 in Glasgow @icom-memory.bsky.social · 18/05/2026
We're back with another keynote speaker highlight - Prof Lawrence Barsalou! icom-memory.org #neuroskyence #psychscisky #cognition #ICOM2027 #philosophysky 🧪
Prof Lawrence Barsalou, University of Glasgow
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International Conference On Memory 26-30 July 2027 in Glasgow @icom-memory.bsky.social · 15/05/2026
Today's keynote speaker to highlight is Prof Dorthe Bernsten! icom-memory.org #neuroskyence #psychscisky #cognition #ICOM2027 #philosophysky 🧪
Prof Dorthe Bernsten, Aarhus University
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International Conference On Memory 26-30 July 2027 in Glasgow @icom-memory.bsky.social · 12/05/2026
For the next few days we'll be focussing on our amazing keynote speakers! First up, we have Prof Sue Gathercole. This is particularly fitting as Sue was one of the co-founders of ICOM. icom-memory.org
Prof Sue Gathercole, University of Cambridge
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International Conference On Memory 26-30 July 2027 in Glasgow @icom-memory.bsky.social · 11/05/2026
We are very excited to officially announced that ICOM - The International Conference on Memory - is back in 2027 from 26th-30th July! icom-memory.org #neuroskyence #psychscisky #cognition 🧪
Poster advertising ICOM 26th-30th July 2027 with 8 keynote speakers
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Maria Wimber @marwimber.bsky.social · 24/02/2026
Shortcuts as a behavioural signature of cognitive map use? My awesome colleagues Eleonore Duvelle & Roddy Grieves revisit Tolman’s sunburst maze and are not convinced…
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Gerhard Jocham @gjocham.bsky.social · 26/02/2026
Amazing work. And ouch, a heavy blow to one of my favourite literature "classics".
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Roddy Grieves @roddy-grieves.bsky.social · 24/02/2026
JOVE's AI-voiced video describing the Morris water maze (app.jove.com/v/5418/spati...) : "Visual cues are arranged around the maze to associate each quadrant with a specific symbol" 😕 "The rodent should learn to associate the location of the platform with the location of a specific visual cue" 🤦
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Roddy Grieves @roddy-grieves.bsky.social · 05/01/2026
Can humans & animals really use internal maps to take shortcuts? Tolman famously said yes - based largely on his Sunburst maze. Our new review & meta-analysis suggests evidence is far weaker than you might think. 🧵👇 doi.org/10.1111/ejn.... @uofgpsychneuro.bsky.social @ejneuroscience.bsky.social
doi.org
Tolman's Sunburst Maze 80 Years on: A Meta‐Analysis Reveals Poor Replicability and Little Evidence for Shortcutting
In 1946, Tolman et al. reported that rats could take a novel shortcut to a goal after training on an indirect route, supporting the Cognitive Map theory. However, a review of subsequent Sunburst maze...
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Roddy Grieves @roddy-grieves.bsky.social · 13/11/2025
Publication bias is bad, sure. But has anyone studied publication bias in studies on publication bias? (They have. There isn’t.) doi.org/10.1136/bmj.... Next up: publication bias in studies on studies on studies of publication bias. #AcademicHumor #metascience #nerdhumor
doi.org
Systematic review of publication bias in studies on publication bias
Publication bias is a well known phenomenon in clinical literature,1 2 in which positive results have a better chance of being published, are published earlier, and are published in journals with high...
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Roddy Grieves @roddy-grieves.bsky.social · 10/11/2025
Anecdote from Innis (1992) To quell his anxiety, a group of Tryon's students conducted an Ocean's Eleven style operation to deconstruct and transport a huge rat maze from one building to another while a second group of students distracted him on an out of town trip. doi.org/10.1037//000...
Tryon’s maze had taken many years and much labor to develop, and he was extremely protective of it. Thus, when the Psychology Department was about to take up residence in the new Life Sciences Building, Tryon approached the move with some trepidation. Sensing his anxiety, some of the graduate students persuaded him to join them on a trip one weekend, and while they were absent, others undertook the move without his knowledge. All went well, and the maze was safely installed on the top floor of Life Sciences, where it would remain in service for many years to come.
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International Society for Neuroethology @neuroethology.org · 21/10/2025
🚨 Journal of Comparative Physiology A #JCP-A has published a collection on "The #Honeybee #Odometer Controversy" 🐝 ↘️ link.springer.com/collections/... ↙️ Read and discuss the issue of the "most serious allegation of scientific misconduct in the history of #neuroethology" with students & colleagues 💬
link.springer.com
The Honeybee Odometer Controversy
Research around the turn of the millennium showed that honeybees use the amount of optic flow during foraging flights to estimate the distance between a food ...
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Roddy Grieves @roddy-grieves.bsky.social · 13/10/2025
Nice paper from Fuentealba et al. (2025) looking at the involvement of hippocampus in the emulation of conspecifics: www.sciencedirect.com/science/arti... #Neuroscience #Hippocampus #PlaceCells #SpatialLearning
sciencedirect.com
Emulation as a behavioral strategy underlying spatial observational learning in rats
Humans and several non-human species have shown the ability to learn by observing an experimented conspecific. A basic form of this learning is spatia…
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Lars Muckli @larsmuckli.bsky.social · 05/04/2025
We are recruiting for 5 permanent staff positions (Prof, Senior-, Lecturer) including for 7T-MRI. Please have a look and share widely. (Closing date: May 12) www.nature.com/naturecareer...
nature.com
Professor, Senior Lecturer/Lecturer and Lecturer posts - Glasgow City (GB) job with University of Glasgow | 12838283
University of Glasgow College of Medical, Veterinary and Life Sciences  School of Psychology & Neuroscience Professor in Cognitive Neuroscience/Psy...
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Roddy Grieves @roddy-grieves.bsky.social · 08/04/2025
Rate adaptation in a continuous attractor predicts the alternating left/right theta sweeps observed in hippocampus and mEC. Really nice computational model, backed up with a reanalysis of ephys data, from Widloski, Theurel and Foster: www.sciencedirect.com/science/arti...
sciencedirect.com
Spontaneous alternation of place-cell sequences in the open field through spike frequency adaptation
Spatial sequences encoded by cells in the hippocampal-entorhinal region have been observed to spontaneously alternate across the animal’s midline duri…
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Roddy Grieves @roddy-grieves.bsky.social · 08/04/2025
In 1950s/60s "curiosity" was one of the theories proposed for exploration in animals. The issue was that the theory (curiosity) could only be measured using the thing it was supposed to explain (exploration). Makes sense to look at this in humans, where you can just ask them how curious they are!
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Mikkel Roald-Arbøl @roald-arboel.com · 03/04/2025
Ethologists and neuroscientists: What is a theoretical ethology paper that has shaped the way you think about behaviour? Here I'm not thinking experimental papers with a point, or even tools that are developed to prove a point - purely theoretical, making conceptual, general points.
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Roddy Grieves @roddy-grieves.bsky.social · 03/04/2025
Paper from Mainali et al. modelling place cells "across species and dimensionalities" doi.org/10.1016/j.ne... Unfortunately it overlooks our rodent place cell results in 3D: doi.org/10.1038/s414... Which arguably make the best comparison to flying bats 🤦 #Neuroscience #CognitiveNeuroscience
doi.org
The place-cell representation of volumetric space in rats - Nature Communications
How the brain represents 3D space is poorly understood but important for understanding spatial cognition. Here the authors record place cells in rats climbing through a 3D environment and report that ...
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Roddy Grieves @roddy-grieves.bsky.social · 28/03/2025
Nice paper from Subramanian & David Smith looking at time cells in the retrosplenial cortex: doi.org/10.1002/hipo... #Neuroscience #Neurobiology #Neurons #hippocampus
doi.org
Time cells in the retrosplenial cortex
The retrosplenial cortex (RSC) is a key component of the brain's memory systems, with anatomical connections to the hippocampus, anterior thalamus, and entorhinal cortex. This circuit has been implic...
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Roddy Grieves @roddy-grieves.bsky.social · 21/03/2025
I enjoyed this preprint from Ottaviani et al. a lot. www.biorxiv.org/content/10.1... "we found that the relative frequency of novelty terms (e.g. groundbreaking, innovative) nearly doubled" between 1997 and 2017. #Ecology #Metascience #AcademicChallenges
biorxiv.org
On the quest for novelty in ecology
The volume of scientific publications continues to grow, making it increasingly challenging for scholars to publish papers that capture readers’ attention. While making a truly significant discovery…
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Roddy Grieves @roddy-grieves.bsky.social · 17/03/2025
Ji et al, Burgess lab: phase precession, theta skipping & theta modulation of head direction cells in the anteroventral thalamic nucleus (AVN). Explained using a ring attractor model with theta input and firing rate adaptation: onlinelibrary.wiley.com/doi/10.1002/... #Neuroscience #Neurons
onlinelibrary.wiley.com
Phase Precession Relative to Turning Angle in Theta‐Modulated Head Direction Cells
Grid and place cells typically fire at progressively earlier phases within each cycle of the theta rhythm as rodents run across their firing fields, a phenomenon known as theta phase precession. Here...
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Roddy Grieves @roddy-grieves.bsky.social · 17/03/2025
Quite a nice paper/model. I really like that it doesn't explain place cells in a vacuum - it incorporates place/boundary/pbject/grid cells into a holistic representation of space that can be used for planning. Definitely check it out.
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Roddy Grieves @roddy-grieves.bsky.social · 17/03/2025
Short preprint from Soldi et al. www.biorxiv.org/content/10.1... which I found quite interesting. Inactivation of dentate gyrus did not impact performance very much in a spatial task with overlapping elements. #Neuroscience #Hippocampus #BrainResearch #AnimalNavigation
biorxiv.org
The dentate gyrus provides flexibility for efficient spatial navigation
The hippocampus plays a critical role in spatial navigation and declarative memory. The dentate gyrus is the neurogenic region of the hippocampal formation and it has long been implicated in the fine ...
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Roddy Grieves @roddy-grieves.bsky.social · 14/03/2025
Interesting commentary onlinelibrary.wiley.com/doi/full/10.... on a paper that was published a little while ago (doi.org/10.7554/eLif...) which claimed mice were taking shortcuts based on self-motion information alone. #AnimalNavigation #BehavioralNeuroscience #Shortcutting #AnimalBehavior
onlinelibrary.wiley.com
Geometry as a Guide: Enclosure Effects on Spatial Mapping (Commentary on Xu et al. 2024)
Geometry, rather than path integration, plays a central role in cognitive map formation. The interaction between grid and place cells relates to geometry coding. Experiments focusing on spatial navig...
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Roddy Grieves @roddy-grieves.bsky.social · 10/03/2025
Really nice experiment from Zutshi et al. looking at how the hippocampus encodes non-spatial variables, like auditory cue tones, while animals solve a spatial task: doi.org/10.1038/s415... #Neuroscience #Hippocampus #BrainScience
doi.org
Hippocampal neuronal activity is aligned with action plans - Nature
Using high-density electrophysiological recordings, how internally generated cell assemblies are updated by action plans to meet external goals is explored.
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Roddy Grieves @roddy-grieves.bsky.social · 03/03/2025
A nice discussion and comparison of the 'natural history' and 'natural philosophy' approaches to the study of animal behaviour: www.sciencedirect.com/science/arti... #AnimalBehaviour #BehavioralScience #Neuroethology
sciencedirect.com
Two paradigms of research and their influence on the study of animal behaviour
Taxonomist Roy Crowson identified a fundamental difference among sciences. What he called “natural history” is exemplified by classical biology; it be…
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Roddy Grieves @roddy-grieves.bsky.social · 28/02/2025
"Nine rats were trained in an olfactory discrimination task (go/no-go) using a specific wine variety (Riesling or Sauvignon Blanc from different winemakers)" 😂 From: Rats can distinguish (and generalize) among two white wine varieties doi.org/10.1016/j.ne...
doi.org
Redirecting
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Roddy Grieves @roddy-grieves.bsky.social · 27/11/2024
Hi Bluesky! It's been a long time since I used any social media but I thought I would give this community a go. I'm here mainly for the neuroscience chat and to see all the cool papers coming out. I'll probably occassionally post about cool papers I've read...
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