Maithe Arruda Carvalho
@arrudacarvalho.bsky.social
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Neuroscientist. Associate Professor @ University of Toronto Scarborough.
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Maithe Arruda Carvalho
Madhu Pai, MD, PhD
about 10 hours ago
Access 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...
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Kids have a right to vaccinations. Let's bring in the lawyers
Children suffering from diseases that should have been consigned to history is a moral failure. Access to vaccines is a human right.
https://www.statnews.com/2025/11/12/children-vaccines-measles-whooping-cough-rights-united-nations-conventions/
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J. Kelly Nestruck
about 6 hours ago
Great 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...
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U of T hires three top U.S. scholars, plans for 100 new postdocs
Canadian-born MIT astrophysicist Sara Seagar among those joining the university
https://www.theglobeandmail.com/canada/education/article-u-of-t-hires-three-top-us-scholars-plans-for-100-new-postdocs/
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Jim Woodgett
about 22 hours ago
Get your Covid booster. SARS Cov-2 is relying on ignorance and misinformation to continue to infect and injure and kill. Don’t let it.
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Bertoglio lab (FMC/UFSC)
1 day ago
Extended fear learning enhances excitatory and inhibitory synaptic transmission onto amygdala engram cells
www.nature.com/articles/s41...
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Extended fear learning enhances excitatory and inhibitory synaptic transmission onto amygdala engram cells - Nature Communications
Neural mechanisms underlying long-lasting traumatic memories are not fully understood. Here authors show that only crucial fear engram, induced by intense fear conditioning, will be amplified. Further...
https://www.nature.com/articles/s41467-025-64854-5
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Raywat Deonandan
2 days ago
My latest post: "Canada’s Measles Setback Is a Symptom of a Larger Illness"
medium.com/@deonandan/c...
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Canada’s Measles Setback Is a Symptom of a Larger Illness
Raywat / blog, epidemiology / 0 comment
https://medium.com/@deonandan/canadas-measles-setback-is-a-symptom-of-a-larger-illness-31bd4693cc0d
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T. Ryan Gregory 🇨🇦
4 days ago
www.ctvnews.ca/politics/art...
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Unions condemn federal government’s plans to change collective bargaining rules
Federal public service unions are condemning the government’s proposed amendments to collective bargaining rules — though they admit they know little at this point about what those changes could entai...
https://www.ctvnews.ca/politics/article/unions-condemn-federal-governments-plans-to-change-collective-bargaining-rules/
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John Woodside
4 days ago
Incredibly weak statement from Canada at COP30. It says “effective action starts with detailed planning” and points to this week’s climate competitiveness plan as proof of Canada’s efforts. Weird given that plan has no target, no GHG modelling, dismantles policies policies and calls LNG low carbon.
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Canada delivers its national statement at COP30 - Canada.ca
Canada delivers its national statement at COP30
https://www.canada.ca/en/environment-climate-change/news/2025/11/canada-delivers-its-national-statement-at-cop30.html
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Pauline Barmby
7 days ago
It’s hard not to feel insulted by the Canadian federal budget’s implication that researchers currently working in Canada aren’t good enough, so they’ll spend a bunch of taxpayer money to bring in “top talent” from elsewhere.
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Johanna Joyce
7 days ago
New issue of Nature - with NINE studies on
#brain
#development
from the BRAIN Initiative Cell Atlas Network (BICAN) 🧠🧪🔬 An amazing set of resources for all scientists working on the brain! 🧠 Immersive feature:
www.nature.com/immersive/d4...
🧠 Perspective:
www.nature.com/articles/s41...
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Jim Woodgett
7 days ago
The 🇨🇦 Standing Committee on Science and Research passed a modified resolution this afternoon that the requested ricouncil applicant and reviewer data can be aggregated and anonymized. Thanks to the many researchers who signed letters pointing out legitimate data privacy concerns. 👏👏
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Andrew Pruszynski
7 days ago
Study permit exemption for graduate students...
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Blayne Haggart
7 days ago
This feels like a fundamental realignment in Canadian politics. The Conservatives are completing their regression, begun in the 2015 “barbaric cultural practices” election, to their Reform Party roots. The Liberals now resemble not the Mulroney PCs but the Harper Conservatives. And the NDP is MIA.
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Dr. M. Natasha Rajah, Ph.D.
8 days ago
So Canadian researchers are left fighting over the same ol’ 🍯 but we will attract more international talent w big bucks & no sustainability plan 🤔
#budget2025
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Dr. M. Natasha Rajah, Ph.D.
8 days ago
It’s insulting to tell 🇨🇦 scientists we need international scientists to run to our rescue & ensure innovation. 🇨🇦 scientists have exceeded expectations with paltry funding. If the gov funded Tricouncil > & sustainably; imagine how innovative we’d already be!! /End
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Gareth Lim
7 days ago
Increasing support to researchers already in Canada by allocating this $1B to tri-council funding and infrastructure would go a VERY long way. Research labs provide training and employment, strengthen innovation, and produce findings that can benefit all Canadians. 2/
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Gareth Lim
7 days ago
Two large studies have been commissioned by the @liberal_party on how to improve and enhance the Canadian research ecosystem, and it is almost as if they were after thoughts deemed irrelevant. Instead
#budget2025
seems to focus more on provide tax breaks for industry. 3/
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Gareth Lim
7 days ago
If
#Budget2025
is supposed to be one that is "generational," it is a shame that investing in those who are already here and contributing to Canada's future have been completely overlooked. /fin
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Andrea Howard
7 days ago
Those 1000 new researchers will also compete with the rest of us for the same amount of tricouncil funding. So, expect grant success rates to get worse
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Jibran Khokhar
7 days ago
1 billion dollars for 1000 researchers means 1 million per researcher! Starting assistant professors in the US get 3x that! Imagine what this could have done tri-council success rates instead!
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Lauren Dobson-Hughes
7 days ago
There are very real people who rely on Canada’s global health spending for their daily HIV medications, for contraception, for the midwife that delivers their baby, for food aid that keeps their kids alive It is callous to say we’re cutting lots of this but can’t say where, how much, why or when
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Maithe Arruda Carvalho
Adrien Peyrache
7 days ago
A chemical extracted from carrot roots helped pave the way for flat-screen TVs, and six other discoveries that unintentionally changed the world. Perfect talking points for when you need to defend basic science, whether it’s to your grumpy uncle or your MP.
www.nature.com/articles/d41...
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7 basic science discoveries that changed the world
Ozempic, MRI machines and flat screen televisions all emerged out of fundamental research decades earlier — the very types of study being slashed by the US government.
https://www.nature.com/articles/d41586-025-03474-x
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Lauren Dobson-Hughes
8 days ago
Canada budget update: A $2.7bn cut to international assistance over 5 years, or about 10-12% of the budget. Particularly focusing on global health, which is worrying because it's a core Canadian priority Not sure we need a resurgence of polio on top of everything, but what do I know
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Maithe Arruda Carvalho
The Transmitter
8 days ago
Congratulations to Sheena Josselyn
@sjo09.bsky.social
, contributing editor at
@thetransmitter.bsky.social
, on winning the 2025 Peter Seeburg Integrative Neuroscience Prize in recognition of her profound impact on memory research.
#neuroskyence
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Maithe Arruda Carvalho
Michael Hendricks 🇨🇦
8 days ago
The only reason to violate the confidentiality of peer reivew is to undermine it. The only reason to demand this kind of information is to abuse it.
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Maithe Arruda Carvalho
Paul Gribble 🇨🇦
8 days ago
a gross parliamentary overreach — article by
@picardonhealth.bsky.social
in the globe and mail;
#academicsky
#neuroskyence
#psychscisky
www.theglobeandmail.com/gift/91587b9...
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How much are MPs entitled to know about research grants? Not as much as they think
A parliamentary committee is asking for academics’ private information on a strange anti-DEI crusade
https://www.theglobeandmail.com/gift/91587b97f8f67abfcc5a25fafa23d9711c357048a3c4f1ea5b199a1076a73a29/ETWOFKPB7NGPPBFFEGKRNIBLAU/
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Mark Chadbourn
10 days ago
When ChatGPT was asked to rate 40,000 résumés, it ranked the older male candidates as better quality than the younger female applicants.
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Age and gender distortion in online media and large language models - Nature
Stereotypes of age-related gender bias are socially distorted, as evidenced by the age gap in the representations of women and men across various media and algorithms, despite no systematic age differ...
https://www.nature.com/articles/s41586-025-09581-z
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Michael Hendricks 🇨🇦
12 days ago
The legitmacy of this depends on extending unearned trust to political actors who have demonstrated an unstated agenda completely orthogonal to "research excellence." It's an overreach of parliamentary authority, and there is no reason to seek personal/confidential information except to abuse it. /7
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Michael Hendricks 🇨🇦
13 days ago
I encourage you to contact your MP, the Minister of Health, and your institution. This has already been bulldozed through with a 15 day requirement to meet the request. Watching politicians vandalize scientific institutions is distressing enough next door, let's not start here.
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Elaine Hyshka
13 days ago
If you are a Canadian scientist 🧪 alarmed by the unfair targeting of academics working on research related to EDI in the US ➡️ Turn your attention to our own House of Commons' Standing Committee on Science and Research and consider signing this open letter:
docs.google.com/forms/d/e/1F...
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Open Letter to Protect Tri-Council EDI Data
Why do we need urgent action to protect our data? The mandate of the House of Commons Standing Committee on Science and Research is to review and report on topics relating to science and research in ...
https://docs.google.com/forms/d/e/1FAIpQLSdaITz2IRZUTHJNvsdaOZqKIMSgduTw7znanDwF8jB0LpQP0g/viewform?pli=1&pli=1
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Michael Hendricks 🇨🇦
13 days ago
Canadian researchers should be aware the there is a motion before the Parliamentary Standing Committee on Science and Research to force Tricouncils to hand over disaggregated peer review data on all applications: Applicant names, profiles, demographics Reviewers names, profiles, comments, and scores
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SJo
13 days ago
Excited to share the latest from the lab on the molecular mechanisms of silencing and un-silencing a hippocampal engram ensemble. Was fun using a variant of the EPSILON technique developed by Adam Cohen's lab. (1/2)
www.sciencedirect.com/science/arti...
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Molecular mechanisms mediating engram ensemble retrievability state in mice
Engrams, ensembles of neurons that store memories, exist along a continuum of retrievability. Normally, sensory cues can reactivate a latent engram to…
https://www.sciencedirect.com/science/article/pii/S0896627325007536?dgcid=author
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gamera obscura
14 days ago
I think a lot about the chance we had at the start of COVID to finally become a more compassionate, collectivist nation, and how profoundly we were failed not only by the sociopathic greed of the ruling class but by each other. It doesn’t mean we won’t get there, but the lost opportunity haunts me.
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Hazel B. | Meme Resister | Forever Canadian
14 days ago
Parkland research manager Rebecca Graff-McRae exposes how Alberta’s new COVID-19 vaccine policy undermines the very idea of public health.
#AxeTheVaxTax
#Ableg
#Abpoli
www.parklandinstitute.ca/sabotaging_p...
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Sabotaging Prevention: Alberta’s ‘Preventative Health’ Ministry Is Anything But
The Alberta government has justified its new protocols for distribution of COVID-19 vaccines by claiming they will minimize wastage, save money, and prioritize the most vulnerable. In this blog, Parkl...
https://www.parklandinstitute.ca/sabotaging_prevention?utm_campaign=covid_vaccine_policy&utm_medium=email&utm_source=parklandinstitute
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Joe Hanson
15 days ago
When people learn with ChatGPT instead of following their own searches, they end up knowing less, caring less, and producing worse advice, even when the facts are the same. Friction is an essential ingredient for learning! Convenience makes us shallow.
academic.oup.com/pnasnexus/ar...
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Experimental evidence of the effects of large language models versus web search on depth of learning
Abstract. The effects of using large language models (LLMs) versus traditional web search on depth of learning are explored. A theory is proposed that when
https://academic.oup.com/pnasnexus/article/4/10/pgaf316/8303888
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Matthew Noe
15 days ago
"I DON'T NEED YOU TO FUCKING REWRITE WHAT I'VE JUST WRITTEN!"
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Princess Vimentin PhD | Cancer Biologist
18 days ago
Commentary by
@needhibhalla.bsky.social
et al. on the recent attacks on DEI in biomedical research. Data show that diversity in the science increases creativity & success in tackling challenging problems. 🧪
www.nature.com/articles/s41...
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BK. Titanji
18 days ago
Finally read the paper and it's worth the buzz. mRNA vaccines saved 20 million lives in a global pandemic and the technology is opening up new avenues for the treatment of deadly cancers. This is really one of the most impactful scientific developments of our time.
www.nature.com/articles/s41...
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SARS-CoV-2 mRNA vaccines sensitize tumours to immune checkpoint blockade - Nature
mRNA vaccines targeting SARS-CoV-2 also sensitize tumours to immune checkpoint inhibitors.
https://www.nature.com/articles/s41586-025-09655-y
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RichardJR
19 days ago
1/8 🚨 💉 AMA WARNS NEW COVID-19 VACCINE POLICY IS A DANGEROUS MISTAKE 💉🚨 The Alberta Medical Association has grave concerns over Alberta's vaccination policy. Fees create a significant barrier to access, risking higher downstream costs from preventable hospitalizations.
#AbHealth
#Covid19
#ableg
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Kevin Bird
19 days ago
People on twitter are losing their minds over this, including several scientists who I have to assume have either brain poisoned themselves or were always like this. People don't always cite what's best; they cite what they know & researchers from historically excluded communities get the short end.
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Paul Frankland
21 days ago
New paper from the lab 🚨 Led by Ali Golbabaei, this study explores the how the composition of prefrontal cortical engrams changes with memory age:
authors.elsevier.com/a/1lzT-3BtfH...
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https://authors.elsevier.com/a/1lzT-3BtfHC-Pj
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Paul Frankland
about 1 month ago
New paper from the lab led by Ali Golbabaei. If you’re interested in systems consolidation, generalization and hippocampal neurogenesis a short 🧵 follows:
authors.elsevier.com/a/1lsO73QW8S...
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https://authors.elsevier.com/a/1lsO73QW8SA4Gf
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Bertoglio lab (FMC/UFSC)
23 days ago
PV-dependent reorganization of prelimbic cortex sub-engrams during systems consolidation
www.cell.com/neuron/fullt...
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PV-dependent reorganization of prelimbic cortex sub-engrams during systems consolidation
Golbabaei et al. explore how the contributions of projection-defined prelimbic cortex “sub-engrams” to contextual fear memory recall change with time. Sub-engrams projecting to the basal amygdala and ...
https://www.cell.com/neuron/fulltext/S0896-6273(25)00746-9
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Jeremy Littau
27 days ago
But even when we answer questions, we consume way less water per answer.
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“Whichever figure you use, the numbers are enormous, rivaling conditions like ADHD and autism as one of the most common chronic diseases in American youth today”
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27 days ago
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Maithe Arruda Carvalho
JAMA
about 1 month ago
In US adolescents, increasing social media use from ages 9–13 was associated with lower scores on measures of reading, memory, vocabulary, and composite cognition.
ja.ma/42B8WCd
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Maithe Arruda Carvalho
Breen Ouellette (he/him)
about 1 month ago
Orange Shirt Day is a time to reflect on Canada's continuing violence against Indigenous children. It is a time to remember that Canada still takes Indigenous children from their families. It is time to demand that these crimes stop. Not 150 years from now. Not a decade from now. NOW.
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Josh Johansen
about 1 month ago
Excited to announce that I'll be moving to the Univ of California Irvine
@ucirvine.bsky.social
next Spring!🌴 Happily, this is not goodbye to Japan as I'll continue my lab @RIKEN_CBS for some time. Help spread the word: the new UCI lab will be hiring, DM or email (
[email protected]
) if interested!
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Maithe Arruda Carvalho
Johanna Joyce
about 1 month ago
Dr. Jane Goodall, 1934-2025 An exceptional scientist, and a singular woman in science
#WomeninScience
🐒
www.nytimes.com/2025/10/01/o...
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Jane Goodall, Eminent Primatologist Who Chronicled the Lives of Chimps, Dies at 91
https://www.nytimes.com/2025/10/01/obituaries/jane-goodall-dead.html?unlocked_article_code=1.qE8.HBOo.Gd5tY3G1hqzn&smid=url-share
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thetranscendedman
about 1 month ago
Ohio State University scientists engineered a weakened SARS CoV 2 virus as a nasal vaccine that also carries RSV proteins. In hamsters it gave complete protection against both COVID and RSV after one dose.
www.science.org/doi/10.1126/...
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Development of SARS-CoV-2 as a viral vector: A novel intranasal bivalent vaccine for SARS-CoV-2 and RSV
Attenuating SARS-CoV-2 and inserting a stabilized RSV prefusion F gene results in a highly protective bivalent intranasal vaccine.
https://www.science.org/doi/10.1126/sciadv.adx7487
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Maithe Arruda Carvalho
Paris Marx
about 2 months ago
I know I’ve been posting a lot about this, but it’s telling of how this government looks at society that at the very moment Mark Carney can’t stop talking about nation-building projects, he’s throwing the biggest nationwide service-delivery network on the scrap heap because it doesn’t make money.
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