Pierre Champetier
Post-doc at the Paris Brain Institute (ICM) with Thomas Andrillon and Delphine Oudiette.
Interested in sleep, infraslow oscillations, ageing, Alzheimer, memory, spindles, slow waves...
- Reposted by Pierre ChampetierNew publication out today from the amazing PhD dissertation of Karen Konkoly @karenkonkoly.bsky.social in Neuroscience of Consciousness @nconsc.bsky.social : Creative problem-solving after experimentally provoking dreams of unsolved puzzles during REM sleep academic.oup.com/nc/article/2...
- Happy to share new preprint on wake slow waves in older adults with subjective cognitive decline, with my awesome postdoc mentors @thomasandrillon.bsky.social & @oudietted.bsky.social at @institutducerveau.bsky.social Thanks @alzheimer-recherche.org for support! www.medrxiv.org/content/10.6...
- Using the INSIGHT-preAD cohort, we showed that in older adults with subjective cognitive decline, resting-state wake slow wave patterns: -Differ by amyloid/neurodegeneration (A/N) status -Correlate with cognition -Predict amyloid positivity (A+) conversion within 2 years
- Evolutionary insights into sleep infraslow rhythmicity! Excited to see research investigating such rhythms beyond humans and rodent models, including pigeons 🐦 and 7 lizard species 🦎
- Infra-slow brain rhythms found in sleep in lizards, humans, rats and pigeons! www.nature.com/articles/s41... Congrats @antbergel.bsky.social!
- Reposted by Pierre ChampetierSleep supports brain health partly by regulating fluid dynamics to clear waste. @ulvlarsen.bsky.social &co probe the relation between #sleep & fluid movement in the human #brain, finding that #SleepPressure & intensity have distinct effects on brain pulsations @plosbiology.org 🧪 plos.io/3XQWCL6
- Reposted by Pierre ChampetierAnnouncing the 5th International Sleep Replay Workshop (ISRW): March 6, 2026, Vancouver, prior to CNS. Program: poster session, discussion groups, 2 symposia, 7 short talks, & many opportunities to interact. Register by Dec 19 at isrw.bio.uci.edu All researchers focused on sleep/cognition welcome.
- Reposted by Pierre Champetier#CNS2026 | Satellite - International Sleep Replay Workshop Friday, March 6, 2026, 8:00 am - 6:00 pm, Salon F The workshop is open to all: experience with sleep research is not required. Register here: isrw.bio.uci.edu Registration Deadline, February 15th @cogneuronews.bsky.social #SleepRelay
- Reposted by Pierre ChampetierInternational recommendations for sleep and circadian research in aging and Alzheimer's disease: A Delphi consensus study alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
- Reposted by Pierre ChampetierOur paper on CSF, BOLD, pupil, and physiological measures in sleep deprivation and recovery sleep is finally out! 🎉 Congrats Zinong! www.nature.com/articles/s41...
- Amazing new study combining functional PET(fPET)-FDG and EEG-fMRI simultaneously during wakefulness and sleep, providing both temporal and spatial insights into metabolic and hemodynamic activities at the infraslow scale (~0.02 Hz) during NREM sleep. Wow 🤯 www.nature.com/articles/s41...
- Simultaneous EEG-PET-MRI identifies temporally coupled and spatially structured brain dynamics across wakefulness and NREM sleep www.nature.com/articles/s41...
- Reposted by Pierre ChampetierNeuroscience of Dreaming Summer School - May 4-8, 2026 - Lucca, Italy Applications open: nodsummerschool.imtlucca.it
- Reposted by Pierre ChampetierCheck out our new preprint: www.biorxiv.org/content/10.1... And Paris' thread (@parboulakis.bsky.social): bsky.app/profile/parb... Where we explore the neural signature of mind blanking using EEG and fMRI combined!
- 🚨Preprint alert 🚨. Our work “Distinct cortical profiles underlie the common reportability of thought-free experiences” is available at www.biorxiv.org/content/10.1.... 🧵A thread ...
- Reposted by Pierre Champetier1/ "Hemispherotomy leads to persistent sleep-like slow waves in the isolated cortex of awake humans" - out now in @plosbiology.org, led by Michele Colombo, Jacopo Favaro, & Marcello Massimini. 🧠
- Reposted by Pierre ChampetierPlease RT! 🙏🙏🙏 1/3 How do you correct for multiple comparisons? Do you take into account *all* comparisons that can render the paper publishable? Most of us don’t. In this NHB piece, Yoav Benjamini, Yoav Zeevi and I argue that it’s time to change our practices >> www.nature.com/articles/s41...
- Reposted by Pierre ChampetierKort Driessen, Fabio Squarcio, Giulio Tononi, Chiara Cirelli "Induction of cortical ON/OFF periods in awake mice fulfills sleep functions" doi.org/10.1101/2025...
- Reposted by Pierre ChampetierNew paper! 🧠💤 www.nature.com/articles/s41... Led by Pauline Dodet - @dreamteamicm.bsky.social We show that #sleep stage mixing predicts poor prognosis in #Parkinson. Stage mixing = intrusions of wake-like activity during sleep, and vice versa. Estimated with hypnodensities extracted from PSG.
- Reposted by Pierre Champetier17,058 proposals received, 1,650 to be funded. Break-even, where more money is paid out than burned by the process, is ~2 months time investment per application (assuming only few admin/review/non-submitted efforts). Uncomfortably close to predatory territory: doi.org/10.1111/imcb...
- The 2025 call for #MSCA Postdoctoral Fellowships drew 17,058 applications worldwide. A 64.6% increase from 2024, it's the most popular call in over four decades. Excellence thrives where it is enabled, protected and shared — and Europe provides that environment. → europa.eu/!jcnGgP #ChooseEurope
- Preprint on sleep-like slow waves during wakefulness in Parkinson's disease
- Inspiring preprint on delta waves in REM (yes, REM) sleep in the context of ageing and Alzheimer's disease, great work!
- Fresh results now in bioRxiv! 🎉 We know about the function of NREM sleep for overnight memory consolidation. But what about REM sleep? We found that in aging, slow delta waves can intrude phasic REM periods, and this, is associated with worse overnight consolidation 🧠 (1/5) doi.org/10.1101/2025...
- Reposted by Pierre ChampetierNew paper in Imaging Neuroscience by Martyna Rakowska, Penelope A. Lewis, et al: Distributed and gradual microstructure changes are associated with the emergence of behavioural benefit from memory reactivation doi.org/10.1162/IMAG...
- 🙏 Honored and grateful to the Neurophysiology PIA for awarding me the 𝐏𝐨𝐬𝐭𝐝𝐨𝐜𝐭𝐨𝐫𝐚𝐥 𝐁𝐞𝐬𝐭 𝐏𝐨𝐬𝐭𝐞𝐫 prize at AAIC (world’s largest research conference on Alzheimer’s disease and dementia) for my work on EEG wake slow waves in older adults 🧠 Thanks to all collaborators at ICM! @alzassociation.bsky.social
- Reposted by Pierre Champetier💤🧠🧪 New article! 🧪🧠💤 After years of effort led by @qualiastructure.bsky.social (Nao Tsuchiya and William Wong), Jenny Windt, Katja Valli, Valdas Noreika and @rherzoga.bsky.social, the Dream database is now published in @natcomms.nature.com **A dream EEG and mentation database** rdcu.be/eAwni
- Interesting study showing that stress shortens REM sleep through an action of the PFC 🧠💤 www.cell.com/current-biol...
- 📜 Thrilled to share the last paper of my PhD in J.Sleep Res., in which we delved into wake and sleep of expert meditators (>10,000 lifetime hours🧘♂️), notably assessing EEG power, complexity, SW and spindles! Thanks @neuropresage.bsky.social @esrs.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
- Interesting work on local sleep in ADHD! 💤 Congrats Elaine, @thomasandrillon.bsky.social and co-authors!
- 🧠🧪💤 New preprint! Sleep-like Slow Waves During Wakefulness Mediate Attention and Vigilance Difficulties in Adult ADHD We show that intrusions of sleep-like activity during wake help explain attention lapses in ADHD. 🔗 www.biorxiv.org/content/10.1... #ADHD #Sleep #Neuro
- Happy to present an online poster at the #AAIC2025, entitled "Wake slow waves during resting-state EEG vary with current and two-year changes in amyloid and neurodegeneration status in older adults with memory complaints". Don't hesitate to contact me on the AAIC platform 😊
- Reposted by Pierre ChampetierIf you are in Paris on October 1-3 : we are organizing a fantastic cognitive neuroscience conference at Collège de France, on topics ranging from language to math, education and consciousness, with many of my favorite scientists ! Full program here: www.unicog.org/seeing-the-m...
- Very interesting preprint linking EEG slowing during REM sleep and in vivo cholinergic denervation in the elderly!
- Very happy to share our preprint on the associations between sleep disturbances and cholinergic PET imaging in older adults! 🧠 💤 👉 We found that higher REM sleep EEG slowing was associated with cholinergic denervation in older participants with and without MCI. #REMsleep #cholinergicsystem
- Reposted by Pierre Champetier🎥🌍 Over 1,000 neuroscience talks now free on YouTube and published at @apertureohbm.bsky.social. 🧠 “Now anyone, anywhere can binge-watch brain science like a box set,” says @stephforkel.bsky.social: www.ru.nl/en/donders-i... @alfiewearn.bsky.social @sitek.bsky.social @sofievalk.bsky.social
- Nice paper on a new kind of brain rhythm in wake and REM sleep: iota oscillations (25–35 Hz) 🤯Interesting insight into fast activity beyond traditional bands, eager to know what is the cognitive relevance of this rhythm!
- Iota oscillations made it past peer review! Welcome to the zoo of sleep oscillations 😊 journals.physiology.org/doi/full/10....
- Many thanks to @fens.org for awarding me a travel grant to attend the conference in Oslo and present my algorithm for automatic removal of cardiac artefacts 🫀 from EEG signals 🧠 without requiring an ECG 🤯! It will soon be implemented in SASICA toolbox (M.Chaumon). Stay tuned!
- Reposted by Pierre ChampetierNew collaborative study out with Mark Wu’s group identifies a thalamic reuniens-zona incerta circuit as both responsive to induced sleep deprivation and essential for mediating recovery sleep. Further perspective on this work follows./1 www.science.org/doi/epdf/10....
- Reposted by Pierre Champetier
[This post could not be retrieved] - Happy to have contributed to this new study where we combined multiple approaches (hypnodensities, aperiodic activity, infraslow rhythms, machine learning models...) to dive deeper into idiopathic hypersomnia with long sleep duration 💤 Congrats @arthurlecoz.bsky.social, you worked hard for this! 👨💻
- 🚨New preprint out! 🚨 We investigated the EEG signatures of Idiopathic Hypersomnia (IH) with long sleep time using fine-grained EEG analysis in PSG recordings. Here’s what we found 👇 www.biorxiv.org/content/10.1... (Illustration from nicolasdecat.com) (1/12)
- Reposted by Pierre ChampetierSharon et al., Slow wave synchrony during NREM sleep tracks cognitive impairment in prodromal Alzheimer's disease alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
- Reposted by Pierre ChampetierI’m looking for a postdoc and RA for an ERC-funded project “SLEEPAWAY: Forgetting unwanted memories in sleep”. You’ll use MEG/EEG and fMRI to understand how the sleeping brain remembers and forgets. PLEASE REPOST 😊 Postdoc: tinyurl.com/vr5thp7s RA: tinyurl.com/ycyzkatc
- Check out our new paper in SLEEP, linking resting-state fMRI connectivity and memory consolidation during sleep in older adults👵💤 Length of spindle trains modulated this relationship Congrats to 1st author Anaïs Hamel! @neuropresage.bsky.social academic.oup.com/sleep/advanc...
- Reposted by Pierre ChampetierTired of spending months teaching every new student how to clean and analyze sleep EEG? 🧠💤 We were too. @labnir.bsky.social That's why we built SleepEEGpy- a simple open-source pipeline to make sleep EEG research faster, easier, and standardized! 👇 doi.org/10.1016/j.co...
- Reposted by Pierre ChampetierNew research from @mpiforbi.bsky.social on European jackdaws reveals that when sleep deprived they prioritize deep sleep, even at the cost of vigilance. This highlights the crucial role of deep sleep. Explore the research, published in @currentbiology.bsky.social: bit.ly/3EFeIKc
- Reposted by Pierre Champetier🧠 PhD position available! Study polypathology in the medial temporal lobe at the Paris Brain Institute with @lemwisse.bsky.social , @nvillain-alz.bsky.social and myself. This exciting project combines neuroimaging, neuropathology and cognition! Please share widely 🙏
- Super excited to announce a PhD position on polypathology in the medial temporal lobe at the Paris Brain Institute together with @nvillain-alz.bsky.social and @robindeflores.bsky.social! offres.institutducerveau-icm.org/fr/jobs/1935... Please repost!
- New cool paper on auditory processing during sleep using MEG data 🎶 www.sciencedirect.com/science/arti...
- Reposted by Pierre Champetier🚨 Registration is open for the Summer School in Sleep and AI. Don’t miss out! May 28-29 2025, Universite de Montreal Speakers include Emmanuel During, @introspection.bsky.social, @glajoie.bsky.social, & many others. (note: talks will be either in French or English) reseausommeil.ca/en/events/ec...
- Reposted by Pierre ChampetierSleep pressure causes birds to trade asymmetric sleep for symmetric sleep www.sciencedirect.com/science/arti...
- Reposted by Pierre ChampetierWith support from @istaart.bsky.social, we are organizing the first Integrative Neuromodulatory Subcortical Systems meeting in collab with Sleep and Circadian Rhythms PIA! WHEN/WHERE: Boston, MGH/Martinos Center on July 17-18; info, register & submit your abstract: education.martinos.org/inss2025/
- Reposted by Pierre ChampetierIn 1/3 of #insomnia, the #1 #sleep disorder, objective sleep recordings do not reveal abnormalities, contradicting subjective assessments. This has bugged sleep experts for decades! @rherzoga.bsky.social publishes a new study in @commsbio.bsky.social to understand this paradox: rdcu.be/edj22 1/n
- Thanks to the Psychology department of the @unisalzburg.bsky.social 🇦🇹 for giving me the opportunity to present my post-doc work on local sleep in early Alzheimer's disease 🙏
- Reposted by Pierre Champetier#StandUpForScience France. Demain vendredi 7 mars : Liste des évènements dans toutes les villes (par ordre alphabétique) 👇
- 🚨 Awesome new paper! Pupil size dynamics were measured in human sleep with eyes open!! 🤯 Notably, pupil size 1) correlated negatively with spindle clusters and 2) modulated the evoked response to auditory stimulation 😴🎶
- Pupil size reveals arousal level fluctuations in human sleep www.nature.com/articles/s41...
- Interesting perspective paper from @anitaluthi.bsky.social and Maiken Nedergaard focusing on microarousals, infraslow fluctuations of noradrenaline and key sleep functions ! www.cell.com/neuron/fullt...
- Reposted by Pierre ChampetierPost-doc opportunity in my lab at JIC, on the Bacillus subtilis circadian clock and interactions with plants. Part of ERC Synergy programme "MicroClock", collaborating with @evolvedbiofilm.bsky.social and Martha Merrow #chronobiology @microclockerc.bsky.social www.jic.ac.uk/vacancies/po...
- Reposted by Pierre ChampetierI am looking for a post-doc on neuroimaging analysis. Come & join my team at UEA (Norwich, UK). The post is for 32 months starting from April. Norwich is a wonderful & affordable city. ➡Apply: vacancies.uea.ac.uk/vacancies/13... ⏰Deadline: 13 February 2025 Questions: s.rossit@uea.ac.uk
- Reposted by Pierre ChampetierLuna: open tools for sleep signals zzz.bwh.harvard.edu/luna/ New v1.2 release: - Python interface for all platforms - efficient linear models (GPA) - extensive walk-through tutorial (zzz.bwh.harvard.edu/luna-walkthr...), data soon to follow in NSRR (sleepdata.org) - and more! #SleepPeeps
- Research on infraslow oscillations during NREM sleep is definitely a hot topic ! 🔥 New paper making the link between norepinephrine oscillations and glymphatic clearance 🧠🚿 @cellcellpress.bsky.social @nataliehauglund.bsky.social www.cell.com/cell/abstrac...
- Reposted by Pierre ChampetierIndividualized temporal patterns drive human sleep spindle timing www.pnas.org/doi/10.1073/...
- Amazing Nature paper showing that pupil size fluctuates at a minute time-scale in NREM sleep in mice, organizing replay of old vs new memories !! 🧠💤
- Sleep microstructure organizes memory replay www.nature.com/articles/s41...
- Reposted by Pierre Champetier#sleeppeeps check out this new meta-analysis which provides great guidance on spindle-slow oscillation measurement which has been highly variable across papers! This work was done in my lab @umass by Thea Ng, an undergraduate @MountHolyoke! elifesciences.org/reviewed-pre...
- Reposted by Pierre ChampetierBreathing orchestrates synchronization of sleep oscillations in the human hippocampus www.pnas.org/doi/10.1073/...
- Reposted by Pierre ChampetierAxonal and synaptic mechanisms in the HUMAN neocortex that could underlie memory consolidation during slow-wave #sleep . Check out our latest research published today in Nature Communications ( @natureportfolio.bsky.social ). 🎉 Link: www.nature.com/articles/s41...
- Reposted by Pierre ChampetierWe're hosting our 4th Sleep Conference, Replay@CUBRIC-25 on 29th and 30th May 2025 here in Cardiff, UK. RSVP below to receive more details about registration in the new year. www.sleepengineering.co.uk/event-detail...
- Reposted by Pierre ChampetierI am currently trying to put together a symposium for WorldSleep on Open Science Practices in Sleep and Dream Research. If any of you are doing any (e.g., Many Labs, Citizen Science, Multiverse, etc.) in your research, please reach out or share and forward! #sleeppeeps @dresler.bsky.social
- Reposted by Pierre ChampetierMy 1st message: “hello world” My 2nd message: JOB ALERT- please share❗ We are looking for 1 PhD candidate If you are interested in #sleep and #memory reprocesing in aging, please get in touch!
