Maithe Arruda Carvalho
Neuroscientist. Associate Professor @ University of Toronto Scarborough.
- Reposted by Maithe Arruda CarvalhoIdentification of an engram ensemble mediating memory forgetting in the dentate gyrus www.cell.com/neuron/abstr...
- Reposted by Maithe Arruda Carvalho
- Reposted by Maithe Arruda Carvalho#JNeurosci: Johantges et al. used mice to study excitatory and inhibitory synaptic connections in the CA1 region, creating a circuit map with cell-type resolution that will guide future research on how the hippocampus supports learning and memory. doi.org/10.1523/JNEUROSCI.1…
- Reposted by Maithe Arruda CarvalhoLet’s be clear, no funder can absorb a 50% increase in application over a period of two years without a significant increase in resources. It is unsustainable and will trigger significant policy changes, which will cause significant challenges. This needs everyone working together.
- Reposted by Maithe Arruda CarvalhoWe were on the cusp of changing medicine forever. Curing things that had no cure. mRNA vaccines are revolutionary
- Moderna CEO says Trump’s policies have so curtailed vaccine market they won’t be investing in new research. So that’s awesome. Good luck when the next pandemic hits. www.tiktok.com/t/ZP8fWErMy/
- Reposted by Maithe Arruda CarvalhoThe shingles vaccine has demonstrated in what is now a 4th replication that it results in a ~20% reduction in dementia. This is better than any drug ever designed and tested for Alzheimer’s.
- The Shingles vaccine and reduction of dementia: a new natural experiment from Canada replicated 3 others and adds to this week's link to slowing of biological aging. erictopol.substack.com/p/spotlight-...
- Reposted by Maithe Arruda CarvalhoThis amazing woman worked so hard for science and sport in Canada. She set up the Standing Committee on Science and Research, was a powerful voice for science in parliament and after being diagnosed with two cancers continued to advocate for good. Proud to have known the Rt Hon Kirsty Duncan. RIP 💔
- Reposted by Maithe Arruda CarvalhoSave the date for the annual "Neural Circuits and Behaviour" satellite conference at the Canadian Association for Neuroscience annual meeting, cohosted by @franklandlab.bsky.social and myself on May 18, 2026. We have a great speaker lineup and will be selecting 4 trainees talks from our registrants!
- Reposted by Maithe Arruda Carvalho
Cuts to the research & scientific expertise that guard public health - in this case food safety - are very troubling in light of Canada’s weakened ability to rely on US science. Protecting Canadians requires more, not less, in these areas. www.theglobeandmail.com/canada/artic... - Reposted by Maithe Arruda Carvalho100%. I wrote about how Carney needs to strengthen Canada's regulatory capacity, esp. in food & health, as the US guts its regulatory & science capacities. Carney's cutting the public service is dangerous & plans use AI chatbots instead in govt is foolhardy. policyoptions.irpp.org/2025/12/trum...
- Happy to share the latest from our lab published @cp-cellreports.bsky.social, where we delineated the synaptic maturation trajectory for vCA1 and iCA1 projections to mPFC, and pathway-specific effects of vCA1- and iCA1-mPFC juvenile inhibition on cognitive flexibility www.cell.com/cell-reports...
- Reposted by Maithe Arruda CarvalhoMain postdoc study out! We can redefine prefrontal cortex regions with single-unit activity! Grateful to @carlenlab.bsky.social and @weltgeischt.bsky.social who made this crazy project real. Thanks to all co-authors, collaborators, and reviewers. www.nature.com/articles/s41...
- Reposted by Maithe Arruda CarvalhoRegistration is filling up fast!
- 🚨Registration for the N American stress meeting is now open!!🚨 Really excited to be part of it and host the event in the @crchum.bsky.social in Montréal this June! www.stress2026.com/registration
- Reposted by Maithe Arruda CarvalhoPrefrontal neural geometry of learned cues guides motivated behaviours www.nature.com/articles/s41...
- Reposted by Maithe Arruda CarvalhoViral delivery of microRNA in patients with Huntington's - years of basic science at Universities, Colleges & Medical Centers make this possible. Hopeful & Exciting
- Pretty cool www.bbc.com/news/article...
- Reposted by Maithe Arruda CarvalhoI meet a lot of pregnant women at work. A grand total of 0 (ZERO!) have been advised to get a COVID vaccine in pregnancy. I would say the majority have bought into the misinformation that the vaccine is dangerous in pregnancy, which is the opposite of the truth.
- Extremely important study, with very concerning implications for the future. The COVID generation: the neurodevelopmental consequences of in-utero COVID-19 exposure. www.sciencedirect.com/science/arti...
- Reposted by Maithe Arruda CarvalhoNew Year, new paper from our lab. Emily Kramer used 3D light-sheet imaging and tissue clearing to examine the spatial architecture of mouse amygdala engram ensembles. onlinelibrary.wiley.com/doi/10.1002/...
- Reposted by Maithe Arruda CarvalhoWe talked about running these numbers at UM soc when it became so obvious that women TAs got more complaints for the same classes. Glad someone tested it formally.
- Reposted by Maithe Arruda CarvalhoHeartbreakingly, despite our best efforts, today the Government of Alberta was able to bring an end to the injunction against Bill 26 on the basis of its use of the notwithstanding clause. This is a cruel and dangerous move by a government that will harm vulnerable young people.
- Reposted by Maithe Arruda Carvalho📣We have 2 open faculty positions for senior researchers in Neuroscience at Queen's University! healthsci.queensu.ca/administrati... 1. a new Director for our Centre for Neuroscience Studies 2. a non-human primate NeuroAI researcher Please share widely and reach out for questions!
- Reposted by Maithe Arruda CarvalhoYet one more reason we cannot allow LLMs to serve as epistemic grounding is that we cannot triangulate among them the way you can among reasonable independent sources. They bullshit in the same way and end up agreeing with one other about things that are completely false.
- Reposted by Maithe Arruda CarvalhoCOVID Vaccines Slashed Kids’ ER Visits by 76 Percent, Study Finds www.scientificamerican.com/article/covi...
- Highly recommend!!!
- Reposted by Maithe Arruda CarvalhoBreaking: Spain brings masks back. Mandatory in hospitals, primary care, and long-term care—for patients, visitors, and staff. Strong recommendation everywhere else. Public health moving where evidence points. Note: Really worth upgrading to respirators. euroweeklynews.com/2025/11/28/s...
- Reposted by Maithe Arruda CarvalhoAustralia just recorded zero cervical cancer cases in women under 25 for the first time since records began in 1982. The amazing result of HPV vaccination.
- Reposted by Maithe Arruda CarvalhoJoin us Dec 8 with Dr. Deena Walker to learn how drugs of abuse disrupt thyroid signaling, how this alters reward pathways, and how a CNS-specific thyromimetic may reduce reward-driven behaviors. 🔗 Register: eventbrite.com/e/thyroid-ho... #AddictionScience #SexDifferences
- Reposted by Maithe Arruda Carvalho🔴230,000 Deaths and the ‘Calculated Silence’ of the Medical Establishment About the COVID Inquiry The Covid Inquiry Report is a devastating critique of the medical establishment which led the UK to the worst public health disaster in a century, argues Anthony Costello
- Reposted by Maithe Arruda CarvalhoA 60-year old man in Germany became the seventh person with HIV to be announced free of the virus after receiving a stem-cell transplant go.nature.com/48C68Ib
- Reposted by Maithe Arruda CarvalhoThalamocortical transcriptional gates coordinate memory stabilization www.nature.com/articles/s41...
- Reposted by Maithe Arruda Carvalhoone of the coolest things about ChatGPT is how you can actually just never use it. you can fill your whole entire life with simply not once using it. it's incredible.
- Reposted by Maithe Arruda CarvalhoThe destruction of one of the world’s great public health agencies is a travesty. RFK Jr. seems determined to replace evidence-based science with quackery and use the CDC as his mouthpiece, by @picardonhealth.bsky.social www.theglobeandmail.com/gift/0fc7a92... via @theglobeandmail.com
- Reposted by Maithe Arruda CarvalhoNov 2025 @rikiwilchins.bsky.social -- Groundbreaking study in journal Pediatrics found that suicidality dropped for transgender youth receiving hormone therapy by nearly 70%, with only 7 patients of 432 (1.6%) discontinuing treatment only 4 of whom re-identified as cisgender.
- Reposted by Maithe Arruda CarvalhoI think this is in part a consequence of successive governments’ conflation of science and innovation. They’re related, to be sure. But a science policy is not an innovation policy, and an innovation policy is not a science policy.
- Reposted by Maithe Arruda Carvalho#Canada Prime Minister @mark-carney.bsky.social U-turn on climate has been noticed and denounced at #COP30. www.nationalobserver.com/2025/11/20/o... ✍️ by @jvipondmd.bsky.social
- Reposted by Maithe Arruda CarvalhoI wonder the extent to which formal public health recognition of the link between common viral infections and dementia/AD is being held back by the regulatory obligation it creates for things like clean indoor air and managing risk of infections we currently view as relatively benign annoyances.
- Reposted by Maithe Arruda CarvalhoAffective science has lost an extraordinary member of our community: Dr. Paul Ekman, who passed peacefully at home at the age of 91 on Monday. Dr. Ekman's pioneering cross-cultural research on the interpretation of facial expressions in emotional terms...(1)
- Reposted by Maithe Arruda CarvalhoIn a new phase 3 trial, people randomly assigned to receive a flu shot made with modified mRNA were 34.5% less likely to be diagnosed with an influenza-like illness than people given a standard flu shot made with inactivated virus. We need to stop the anti-science attacks against mRNA vaccines!
- Reposted by Maithe Arruda CarvalhoLots of political posturing this morning about whether Canada should have taxpayer subsidized school lunch programs. So let's summarize the peer-reviewed evidence: Thread [1/8]
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View full threadReposted by Maithe Arruda CarvalhoNow if we could provide those lunches in cafeterias supplied with clean air, just think what we could achieve!
- Reposted by Maithe Arruda CarvalhoThis is what's at stake. The UCP is not only dodging its responsibility to explain how Bill 9 is in any way proportionate or justifiable in a free and democratic society. They are putting children at far greater risk of suicide.
- Reposted by Maithe Arruda Carvalho"Canada receives the award because the new government of Prime Minister Mark Carney has flushed years of climate policies down the drain, and is completely ‘Missing In Action’ at a COP where multilateralism needs to be saved." - Climate Action Network International
- Reposted by Maithe Arruda CarvalhoAt COP30 Canada just got awarded the fossil of the day — first time since 2014 (the harper years). Clear sign of how Carney’s pro fossil fuel agenda and backsliding on climate policy is being noticed internationally.
- Reposted by Maithe Arruda CarvalhoNicely summarizes how the Carney government’s thoughtless, reckless AI strategy will reduce government capacity while making government more dependent on foreign tech firms. As with a lot of things with this government, it comes down to a refusal to think about long-term governance issues.
- Reposted by Maithe Arruda Carvalho"Are we going to support talent here in Canada and the development of our students and our researchers who are here?'" Whitaker asked…simply injecting a wave of high-profile academics at the top without supporting the foundation beneath them is "going to leave us short-changed." @caut.bsky.social
- Reposted by Maithe Arruda CarvalhoScientific program chairs @rcbagot.bsky.social and @markcembrowski.bsky.social have put together a great program: can-acn.org/meeting-2026... - Now is your chance to contribute also!
- Reposted by Maithe Arruda Carvalho#eNeuro offers the option of double-blind review, allowing the authors to remain anonymous to the reviewers. Learn more about the review process at SfN’s gold open-access journal: eneuro.org/content/submitting-…
- Reposted by Maithe Arruda CarvalhoAccess to vaccines is not a privilege — it is a human right. In @statnews.com today, Stefan Peterson and I write about using a human rights-based approach to deal with vaccine denialism and the return of measles, whooping cough and diphtheria www.statnews.com/2025/11/12/c...
- Reposted by Maithe Arruda CarvalhoGreat that top Canadian universities are hiring top scholars (why wouldn't they?) but the Ontario Progressive Conservative government has starved the post-secondary sector and the province has the lowest per-student funding of any Canadian province. www.theglobeandmail.com/canada/educa...
- Reposted by Maithe Arruda CarvalhoGet your Covid booster. SARS Cov-2 is relying on ignorance and misinformation to continue to infect and injure and kill. Don’t let it.
- Reposted by Maithe Arruda CarvalhoExtended fear learning enhances excitatory and inhibitory synaptic transmission onto amygdala engram cells www.nature.com/articles/s41...
- Reposted by Maithe Arruda CarvalhoMy latest post: "Canada’s Measles Setback Is a Symptom of a Larger Illness" medium.com/@deonandan/c...
- Reposted by Maithe Arruda Carvalho
