Pierre Champetier
@champetier-pierre.bsky.social
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...
Interested in sleep, infraslow oscillations, ageing, Alzheimer, memory, spindles, slow waves...
Reposted by Pierre Champetier
New 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...
Creative problem-solving after experimentally provoking dreams of unsolved puzzles during REM sleep
Abstract. Dreams have arguably been a source of creative insight for millennia. The specific assertion that dreams during rapid eye movement (REM) sleep pr
academic.oup.com
February 5, 2026 at 4:32 PM
New 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...
Thanks @alzheimer-recherche.org for support!
www.medrxiv.org/content/10.6...
Sleep-like slow waves during resting-state: a promising EEG biomarker of amyloid and neurodegeneration in preclinical Alzheimer disease
INTRODUCTION: Growing evidence supports a critical role of sleep slow waves (SW) in Alzheimer's disease (AD). However, wake SW (sleep-like SW potentially reflecting local intrusions of sleep) remain u...
www.medrxiv.org
January 20, 2026 at 9:41 AM
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...
Thanks @alzheimer-recherche.org for support!
www.medrxiv.org/content/10.6...
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!
www.nature.com/articles/s41...
Congrats @antbergel.bsky.social!
Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals - Nature Neuroscience
Bergel et al. show that an infraslow rhythm connecting the brain and body during sleep is shared by lizards, mammals and birds, revealing an ancestral process and reshaping our understanding of the ev...
www.nature.com
January 2, 2026 at 11:40 AM
Evolutionary insights into sleep infraslow rhythmicity! Excited to see research investigating such rhythms beyond humans and rodent models, including pigeons 🐦 and 7 lizard species 🦎
Reposted by Pierre Champetier
Sleep 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
November 25, 2025 at 5:40 PM
Sleep 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 Champetier
Announcing 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.
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.
The 5th International Sleep Replay Workshop
urldefense.com
November 20, 2025 at 5:57 PM
Announcing 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.
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
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
Workshops, Socials & Special Events - Cognitive Neuroscience Society
March 7 – 10, 2026 CNS Account CNS 2026 | Workshops, Socials & Special Events SESSION DATE TIME LOCATION Satellite – International Sleep Replay Workshop Friday, March 6 8:00 am – 6:00 pm Salon F Wor...
www.cogneurosociety.org
November 13, 2025 at 4:21 PM
#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
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 Champetier
International recommendations for sleep and circadian research in aging and Alzheimer's disease: A Delphi consensus study
alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
International recommendations for sleep and circadian research in aging and Alzheimer's disease: A Delphi consensus study
INTRODUCTION Research in the field of sleep, aging, and dementia is rapidly growing. Consensus guidance is needed to facilitate high-quality research, comparability, and consistency. METHODS A mod...
alz-journals.onlinelibrary.wiley.com
October 31, 2025 at 6:24 PM
International recommendations for sleep and circadian research in aging and Alzheimer's disease: A Delphi consensus study
alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
alz-journals.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by Pierre Champetier
Our paper on CSF, BOLD, pupil, and physiological measures in sleep deprivation and recovery sleep is finally out! 🎉 Congrats Zinong! www.nature.com/articles/s41...
Attentional failures after sleep deprivation are locked to joint neurovascular, pupil and cerebrospinal fluid flow dynamics - Nature Neuroscience
Yang et al. show that moments of failed attention we experience after sleep deprivation reflect brief ‘sleep-like’ episodes in the brain, corresponding to a brain- and body-wide event with altered bra...
www.nature.com
October 29, 2025 at 7:26 PM
Our 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...
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...
www.nature.com/articles/s41...
Simultaneous EEG-PET-MRI identifies temporally coupled and spatially structured brain dynamics across wakefulness and NREM sleep - Nature Communications
Using simultaneous EEG-PET-MRI, this study reveals tightly coupled physiological dynamics during the descent from wakefulness into NREM sleep and identifies network-specific activity underlying sensor...
www.nature.com
October 29, 2025 at 6:44 PM
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...
www.nature.com/articles/s41...
Reposted by Pierre Champetier
Neuroscience of Dreaming
Summer School - May 4-8, 2026 - Lucca, Italy
Applications open: nodsummerschool.imtlucca.it
Summer School - May 4-8, 2026 - Lucca, Italy
Applications open: nodsummerschool.imtlucca.it
October 20, 2025 at 9:27 AM
Neuroscience of Dreaming
Summer School - May 4-8, 2026 - Lucca, Italy
Applications open: nodsummerschool.imtlucca.it
Summer School - May 4-8, 2026 - Lucca, Italy
Applications open: nodsummerschool.imtlucca.it
Reposted by Pierre Champetier
Check 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!
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!
October 16, 2025 at 12:16 PM
Check 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!
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!
Reposted by Pierre Champetier
1/ "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. 🧠
October 17, 2025 at 7:57 AM
1/ "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 Champetier
Please 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...
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...
Correction for multiple comparisons should be ubiquitous - Nature Human Behaviour
Nature Human Behaviour - Correction for multiple comparisons should be ubiquitous
www.nature.com
October 16, 2025 at 5:28 PM
Please 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...
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 Champetier
Kort Driessen, Fabio Squarcio, Giulio Tononi, Chiara Cirelli
"Induction of cortical ON/OFF periods in awake mice fulfills sleep functions"
doi.org/10.1101/2025...
"Induction of cortical ON/OFF periods in awake mice fulfills sleep functions"
doi.org/10.1101/2025...
Induction of cortical ON/OFF periods in awake mice fulfills sleep functions
Can animals obtain core benefits of sleep while remaining awake? In mammals, slow-wave sleep is characterized by synchronized neuronal activity alternating between ON and OFF periods. Slow-wave activi...
doi.org
October 9, 2025 at 8:52 PM
Kort Driessen, Fabio Squarcio, Giulio Tononi, Chiara Cirelli
"Induction of cortical ON/OFF periods in awake mice fulfills sleep functions"
doi.org/10.1101/2025...
"Induction of cortical ON/OFF periods in awake mice fulfills sleep functions"
doi.org/10.1101/2025...
Reposted by Pierre Champetier
New 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.
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.
Sleep stage mixing is associated with poor prognosis in early Parkinson’s disease - npj Parkinson's Disease
npj Parkinson's Disease - Sleep stage mixing is associated with poor prognosis in early Parkinson’s disease
www.nature.com
September 29, 2025 at 3:51 PM
New 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.
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 Champetier
17,058 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...
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...
September 14, 2025 at 11:54 AM
17,058 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...
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...
Preprint on sleep-like slow waves during wakefulness in Parkinson's disease
Slow waves during sleep are fundamental for neural homeostasis and are impaired in neurodegenerative diseases. But what about sleep-like slow waves during wakefulness? Are these slow waves altered in Parkinson's disease? Are these slow waves uncovering psychosis?
Sleep-like slow waves during wakefulness uncover a malignant form of Parkinson’s disease
Slow waves during sleep are fundamental for neural homeostasis, metabolic regulation, and waste clearance, and are known to be altered in neurodegenerative diseases. Sleep-like slow waves (SLSW) have ...
www.medrxiv.org
September 14, 2025 at 8:31 PM
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...
REM Sleep Misfires: Intruding Delta Waves Forecast Tau, Amyloid, and Forgetting in Aging
Rapid Eye Movement (REM) sleep degrades with age, and more severely in Alzheimer's disease (AD). REM sleep comprises about twenty percent of adult sleep, alternates between phasic and tonic periods, a...
doi.org
August 25, 2025 at 3:38 PM
Inspiring preprint on delta waves in REM (yes, REM) sleep in the context of ageing and Alzheimer's disease, great work!
Reposted by Pierre Champetier
New 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...
Distributed and gradual microstructure changes are associated with the emergence of behavioural benefit from memory reactivation
doi.org/10.1162/IMAG...
August 24, 2025 at 3:56 AM
New 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...
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
@alzassociation.bsky.social
August 18, 2025 at 10:27 AM
🙏 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
@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
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
August 14, 2025 at 1:40 PM
💤🧠🧪 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
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...
www.cell.com/current-biol...
A top-down control of stress-induced REM sleep shortening
Chouvaeff et al. show that social defeat stress recruits prefrontal projections to
the VLPO to selectively shorten REM sleep bouts, even after overall REM amounts return
to baseline. This pathway prom...
www.cell.com
August 8, 2025 at 11:00 AM
Interesting study showing that stress shortens REM sleep through an action of the PFC 🧠💤
www.cell.com/current-biol...
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/...
@esrs.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
<em>Journal of Sleep Research</em> | ESRS Journal | Wiley Online Library
Compared to controls, elderly expert meditators exhibited (1) more preserved resting-state brain activity, (2) less altered sleep architecture, and (3) EEG features indicative of heightened cognitive...
onlinelibrary.wiley.com
August 1, 2025 at 2:53 PM
📜 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/...
@esrs.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...
Interesting work on local sleep in ADHD! 💤
Congrats Elaine, @thomasandrillon.bsky.social and co-authors!
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
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
August 1, 2025 at 2:49 PM
Interesting work on local sleep in ADHD! 💤
Congrats Elaine, @thomasandrillon.bsky.social and co-authors!
Congrats Elaine, @thomasandrillon.bsky.social and co-authors!
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 😊
July 28, 2025 at 2:18 PM
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 😊