Helena Gellersen@HGellersen

Research Fellow at St John's College Cambridge and formerly the German Center for Neurodegenerative Diseases studying Alzheimer’s, aging & memory.

Joined November 2018
38 Photos and videos
How does the brain rapidly distinguish similar memories? We use 7T fMRI to show dynamic shifts between pattern separation and reinstatement signals in hippocampal CA3 and DG with changing task demands: doi.org/10.64898/2026.04.24.… with @LorisNaspi, @xe_grande, @DuzelLab, @david_berron
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Helena Gellersen retweeted
Andrea Luppi@loopyluppi
Jul 21
1/ What can resting-state neuroimaging offer cognitive and translational neuroscience🧠? Turns out: a lot! 🧵 Long in the making, short in the reading: “Unlocking spontaneous cognition in the age of data science" is out now in @NatRevNeurosci rdcu.be/ftWBh
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Daniel Bor@DanielBor
Jul 16
We've just published a small opinion piece in Nature Reviews Neuroscience, arguing for the under-estimated utility of resting state neuroimaging data, given exciting new methods to analyse it. Work led by @loopyluppi nature.com/articles/s41583-0…

Unlocking spontaneous cognition in the age of data science

Nature Reviews Neuroscience - Spontaneous brain activity is experimentally unconstrained. Embracing this freedom unlocks rich opportunities beyond task-based and naturalistic paradigms, the...

nature.com
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How does the brain rapidly distinguish similar memories? We use 7T fMRI to show dynamic shifts between pattern separation and reinstatement signals in hippocampal CA3 and DG with changing task demands: doi.org/10.64898/2026.04.24.… with @LorisNaspi, @xe_grande, @DuzelLab, @david_berron
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more replies
Lastly, univariate analyses revealed something multivariate methods could not: anterior and posterior subfields were differentially sensitive to feature overlap. Although both engaged in pattern separation, only anterior regions suppressed overall activity in response to lures.
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Taken together, we highlight 1) flexibility of MTL, especially CA3 & DG representations, 2) differences in object & scene processing, 3) functional heterogeneity of the longitudinal hippocampal axis, 4) complicated associations between uni- & multivariate brain activity metrics.
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Helena Gellersen retweeted
Laura Stolp@laura_stolp
Jan 9
How do some people keep their minds sharp when they get older, while others experience cognitive decline? In our new paper, we examined cognitive reserve, which is the brain’s resilience in the face of challenges: sciencedirect.com/science/ar… #neuroscience #cognition #aging 1/7
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A huge thank you to @WomeninNeuroUK for selecting me as a finalist for the Postdoctoral Rising Star award! I am incredibly grateful to everyone who has supported me throughout my career: @js_simons, @david_berron, Karolina Kedzior, Amy Orben, @stjohnscam, and so many others!
WiNUK: Women in Neuroscience UK 🧠@WomeninNeuroUK
20 Oct 2025
Replying to @WomeninNeuroUK
🌿 UG: Aiman Muhammad | Muzuki Ueda | Raven J. Hope 🎓 PG: Karina Piotrowska | Puja Mehta | Clémentine Domine | Margherita Zenoni 🧬 PDR: Dr Hannah Jackson | Dr Soraya Meftah | Dr Helena Gellersen
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Join R4E for a dynamic session! Save the date: Wednesday, October 8, 2025, at 10 AM ET USA / 3 PM CET Europe. Reserve your spot now at forms.gle/yhxMsiXa1o7qL9LA8. Don't let this opportunity pass by! #AcademicTwitter

Registration for R4E Workshop

Wednesday October 8th, 2025 Time: 10am ET USA/ 3pm Central European Time This workshop will introduce reproducible workflows and a range of tools along the themes of organization, documentation,...

docs.google.com
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Helena Gellersen retweeted
Neuroimaging PIA@NeuroimagingPIA
17 Jul 2025
With excitement we welcome our new @ISTAART #NeuroimagingPIA Executive Committee 2025-2026
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Thrilled to be in Brisbane for #OHBM2025! It’s gonna be a busy one all about ultra-high res fMRI: poster 838, a symposium at 9 am on Thursday and if you’re still not sick of me by then, an oral poster talk also on Thursday (not all the same, I promise!). DM me to catch up 🙂🧠🇦🇺
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To all my fellow ISTAART members: I‘m hoping to continue to be a part of the Neuroimaging PIA committee again next year to contribute to their work organising educational material, the Alzheimer‘s Imaging Consortium, and much more. I would be very grateful for your vote!
Neuroimaging PIA@NeuroimagingPIA
11 Jun 2025
Replying to @NeuroimagingPIA
1️⃣ Voting is now open for the 2025-26 Executive Committee! Please cast a vote, if you haven't done so already, for the future Neuroimaging PIA representatives: act.alz.org/site/R?i=ylMQ2FD…
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Neuroimaging PIA@NeuroimagingPIA
25 Apr 2025
To shorten the wait until AIC25, we have one more webinar lined up: A Clinical Case Report webinar focusing on the clinical and neuroimaging implications of anti-amyloid therapy (Lecanemab)! 📅May 20 - 10am CT 💻 Register here: alz-org.zoom.us/webinar/regi…
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Interested in ageing, brain structure & function, and cognitive reserve? We've got you covered in this new preprint by lead author @laura_stolp. Thanks to the whole team for a great collaboration!
Laura Stolp@laura_stolp
14 Feb 2025
Exciting news! Our preprint, "Informational Complexity as a Neural Marker of Cognitive Reserve", is now available! Here, we explore how neural complexity relates to cognitive reserve. Check it out here: biorxiv.org/content/10.1101/… #CognitiveReserve #Preprint #Neuroscience
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