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Marcos Aranda

@marcosaranda.bsky.social
395 followers 513 following 36 posts

Studying effects of light on physiology and behavior | Postdoc at the Schmidt lab | Northwestern University

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Reposted by Marcos Aranda
BWJones @bwjones.bsky.social · 25/09/2026
Science peeps: Looks like SciENcv updated the digital certificate used to sign Biosketch and Current & Pending documents without notification. The old certificate expires Saturday, September 26, 2026. SciENcv docs before that date may fail validation in eRA Commons delaying or blocking submission.
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Bodo Winter @bodowinter.bsky.social · 21/09/2026
New tenure track position call for cognitive science at UCSD: apol-recruit.ucsd.edu/JPF04633
apol-recruit.ucsd.edu
Assistant Professor in Cognitive Science
University of California, San Diego is hiring. Apply now!
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Patrick Kerstein @patrickkerstein.bsky.social · 18/09/2026
A new paper came out this week from our lab in @devbiol.bsky.social. This was work I started as a post-doc with @kevinmawright.bsky.social. Here, we investigated the role of Gbx2 and Robo receptors in dendrite stratification of amacrine cells in the retina. www.sciencedirect.com/science/arti...
sciencedirect.com
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Anna La Torre @latorrelab.bsky.social · 16/09/2026
I’ve spent much of my career studying the eye, but having a dear friend diagnosed with an inherited retinal disease has made this work feel much more personal. Please consider helping us reach our VisionWalk goal, every donation big or small counts: give.fightingblindness.org/fundraiser/7...
give.fightingblindness.org
Washington VisionWalk 2026
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Marcos Aranda @marcosaranda.bsky.social · 10/09/2026
Great opportunity! 👇🏼
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Marcos Aranda @marcosaranda.bsky.social · 31/08/2026
How your email finds me: It doesn't. Outlook is down 🙃
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Reposted by Marcos Aranda
Nature @nature.com · 20/08/2026
The US National Science Foundation will award about 30% fewer new research grants this fiscal year than in the last one, Nature has learnt. go.nature.com/3UcGoNW
go.nature.com
Exclusive: NSF set to issue lowest number of new grants in four decades
The US science-funding agency is withholding $1 billion of its budget so that the money can go to a special White House project.
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Marla Feller @mfeller.bsky.social · 05/08/2026
And now (a much-improved) version -- thank you, reviewers! -- is published in Glia -- onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Müller Glia–Vasculature Interactions in the Developing Retina
Retinal vascular layers form normally despite loss of cholinergic retinal waves. Müller glial processes contact endothelial tip cells early and form Aquaporin-4-enriched endfeet. Glial endfoot c...
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Spencer LaVere Smith @spencerlaveresmith.bsky.social · 25/07/2026
Two-photon calcium imaging. What makes for good data? How can we optimize experiments to get good data? New post labrigger.com/blog/2026/07... and new free web apps from @filip-tomaska.bsky.social (1/8)
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Dan Feldman @danfeldman.bsky.social · 31/07/2026
The Neuroscience Department at UC Berkeley is hiring an Asst Professor in Computational Neuro. All areas of computational/theoretical neuro are welcome. Deadline Oct 30. Join our neuroscience community! aprecruit.berkeley.edu/JPF05446 #AcademicJobs #Neuroscience #NeuroJobs
aprecruit.berkeley.edu
Assistant Professor - Computational Neuroscience - Department of Neuroscience
University of California, Berkeley is hiring. Apply now!
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BWJones @bwjones.bsky.social · 30/07/2026
I've got a new chapter out, Insights Into Retinal Remodeling In Retinal Degenerative Disease: bryanwjones.com/2026/07/insi...
A cartoon figure showing a vertical section through retina with the red, green, and blue cone pathways, the rod pathway and the Müller glia illustrated.
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 13/07/2026
Light gates hormonal modulation of threat avoidance in female mice www.biorxiv.org/content/10.64898/20…
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allen institute @alleninstitute.org · 15/07/2026
Buenos Aires, we're coming to you! Join us at Fundacion Instituto leloir for an interactive workshop on how to explore and use cell type taxonomy data and tools from the Brain Knowledge Platform. 🎟️ Registration is free 🔗 bit.ly/4xBXKD1
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Marcos Aranda @marcosaranda.bsky.social · 14/07/2026
New bioRxiv preprint! How does hormonal state shape decisions about danger? We show that threat avoidance in female mice is dynamically tuned by progesterone through a melanopsin-dependent visual circuit. Surprisingly, the same circuit drives opposite behavioral effects in males and females 🦅👁️🧠
biorxiv.org
Light gates hormonal modulation of threat avoidance in female mice
Animals must constantly calibrate the costs and benefits of exploration of an environment based on expectations of danger. These decisions are strongly shaped by past experience of perceived threats w...
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Cris Niell @crisniell.bsky.social · 13/07/2026
The latest result from a fun ongoing collaboration! @mbeyeler.bsky.social @michaelgoard.bsky.social @spencerlaveresmith.bsky.social
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Samer Hattar @samerhattar.bsky.social · 13/07/2026
A really nice new paper in Cell Reports from Kat Daly on M4 ipRGCs. One of the themes I've loved watching over the past decade is the transformation of melanopsin biology from a niche circadian photopigment into a major player in image-forming vision. 1/5 www.sciencedirect.com/science/arti...
sciencedirect.com
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Fernandez Lab - CCHMC @fernandezlabcchmc.bsky.social · 04/06/2026
Just joined this platform and excited to share our recent article in JBR! 🧠⏰ We propose a new framework for defining clock neurons across the brain using a multiscale approach. Congrats to Burgundy Walters and Shubham Garg! Read it here: journals.sagepub.com/doi/10.1177/... @journals.sagepub.com
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Marcos Aranda @marcosaranda.bsky.social · 03/06/2026
Excited to share our latest work at the @ircm.bsky.social in Montreal 🇨🇦! Looking forward to the discussions and connecting with the great scientific community there
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Daniel Kerschensteiner @kerschensteiner.bsky.social · 09/04/2026
New study led by Ning Shen w/ @phruzycki.bsky.social: a genome-wide in vivo CRISPR screen in a retinitis pigmentosa mouse model identifies genes whose loss accelerates photoreceptor death. Overexpressing two, UFD1 and UXT, preserves photoreceptors, retinal function, and vision. 🧵
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Marcos Aranda @marcosaranda.bsky.social · 02/04/2026
Artículo sobre nuestro paper en Infobae 👇
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Science X / Phys.org @sciencex.bsky.social · 30/03/2026
Light influences how the brain processes and recalls threats, shaping risk avoidance behaviors and potentially informing understanding of anxiety-related disorders. doi.org/hbvb67
medicalxpress.com
Light impacts how the brain perceives and remembers threats, study suggests
Northwestern Medicine scientists have discovered that light plays a key role in how animals perceive environmental threats, findings that have the potential to improve the understanding of risk avoidance behaviors and related disorders in humans, according to a study published in Nature Communications.
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Marcos Aranda @marcosaranda.bsky.social · 08/03/2026
Bird season is starting in Chicago 🪶🐦‍⬛🪺
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Ʌʗʜʋʗɑɼɼʘ @achucarro.bsky.social · 27/02/2026
Achucarro International Glia School is back! #AIGS26 Registration period is already open, and the final programme accessible. Looking forward to this edition in #Plentzia www.achucarro.org/gl... #astrocytes #microglia #oligodendrocytes #glialcells
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Marcos Aranda @marcosaranda.bsky.social · 27/02/2026
My second paper as a postdoc in the lab of @tiffmschmidt.bsky.social is out! In this work, we developed a novel behavioral paradigm to study how light shapes long-term threat avoidance 🐭🦅 through a retina–thalamic–limbic circuit 👁️🧠 Excited to share it! 🙌🏼 👉🏼 www.nature.com/articles/s41...
nature.com
Light tunes long-term threat avoidance behavior in male mice - Nature Communications
In this study, the authors describe how light shapes a long-term threat avoidance behavior via a visual circuit linking the eye with the limbic system in mice.
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Samer Hattar @samerhattar.bsky.social · 07/01/2026
A new paper from my lab. I will have a full description soon. rdcu.be/eX1Ld
rdcu.be
ipRGC properties prevent light from shifting the SCN clock during daytime
Nature - The inability of intrinsically photosensitive retinal ganglion cells to shift the circadian clock in the suprachiasmatic nucleus during daytime is caused by light-dependent depolarization...
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Dr Dorota SK @drdorotask.bsky.social · 06/01/2026
Finally out! We studied the retinas of the longest-living vertebrate, the Greenland shark, and found that the retinas remain remarkably healthy in animals around 150 years old. What is the mechanism? It may be a highly efficient DNA repair system. Enjoy! www.nature.com/articles/s41...
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Marcos Aranda @marcosaranda.bsky.social · 26/12/2025
Fantastic symposium at an incredible institute!✨
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Marcos Aranda @marcosaranda.bsky.social · 23/12/2025
My job: studying how light shapes behavior. His job: saving the world.
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Wert Laboratory (PI: Katherine Wert) @wertlaboratory.bsky.social · 11/12/2025
Want to hear about amazing research in ophthalmology? Register for the first inaugural Southwestern Vision Science Summit coming March 28, 2026! events.utsouthwestern.edu/event/southw...
events.utsouthwestern.edu
Southwestern Vision Science Summit (SVSS)
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Petr Znamenskiy @petrznam.bsky.social · 12/12/2025
One week left to submit an abstract to Senses in Motion 2026! It's bound to be an exciting meeting with an excellent line-up of speakers! Please join us! More details and registration link at 👇 sensesinmotion.org
Banner and confirmed speakers for Senses in Motion 2026 conference
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Marcos Aranda @marcosaranda.bsky.social · 15/12/2025
Really looking forward to it! 🔜🇪🇸
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Riccardo Storchi @rstorchi.bsky.social · 09/11/2025
Delighted to share our latest preprint. It's been a long time coming. Thanks to all the authors for their unique contribution and for for their patience. We show how the visual thalamus deals with active and passive head motion in freely moving animals: www.biorxiv.org/content/10.1...
biorxiv.org
Efficient mixed representation of active and passive motion in the mouse visual thalamus during natural behaviour
During natural behaviour, changes in the visual scene are largely driven by the subject’s own movements, which can be actively generated (e.g., walking) or passively imposed by external forces (e.g., ...
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Marcos Aranda @marcosaranda.bsky.social · 08/11/2025
Thank you for the invitation @weillcornell.bsky.social! Fantastic discussions and inspiring colleagues!
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Ben Sivyer @bensivyer.bsky.social · 04/11/2025
We’re hiring! Join the Sivyer Lab at The University of Sydney as a Postdoctoral Research Fellow in Neurodegeneration within the Snow Vision Accelerator, a $50M initiative tackling glaucoma and optic nerve disease. iPSCs, electrophysiology, drug discovery, and gene therapy.
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Chiara Fornetto @chiarafornetto.bsky.social · 04/11/2025
Excited to share our paper now published in Cell! 'Zebrafish use spectral information to suppress the visual background' Huge thanks to @neurofishh.bsky.social & @teuler.bsky.social @cellpress.bsky.social @cp-cell.bsky.social 👇🏻 www.cell.com/cell/fulltex...
cell.com
Zebrafish use spectral information to suppress the visual background
Vertebrate eyes first evolved in water, where spectral content rapidly fades with distance. Zebrafish exploit this loss by antagonizing cone signals to suppress the background, pointing to distance es...
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Pierre Mattar @pierre-mattar.bsky.social · 18/01/2025
Two new papers to... er... skeet? Blurt? Bluert? First is that our paper on the transcription factor Adnp and the ChAHP chromatin remodelling complex is now out. www.pnas.org/doi/10.1073/... I already blurted the paper here: bsky.app/profile/pier...
pnas.org
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Michel Cayouette @michelcayouette.bsky.social · 29/10/2025
Our latest paper is out! While the circadian photoentrainment circuit has been extensively studied, the mechanisms regulating its development remain poorly understood. Here we show that retinal Müller glia play a key role in this process. Check it out! www.sciencedirect.com/science/arti...
sciencedirect.com
Retinal glia regulate development of the circadian photoentrainment circuit
Circadian photoentrainment depends on intrinsically photosensitive retinal ganglion cells (ipRGCs), which convey environmental light information to th…
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Sleep Science Podcast @sleepsciencepod.bsky.social · 29/10/2025
£250 Visual Art Prize Competition! We're looking for art work to represent our research on sleep & mental health. Deadline: 31st December! More info here: www.sleepengineering.co.uk/art-call-out
Dark purple poster displaying an art competition with a prize of £250. 
Competition is for art displaying the lab's research on sleep & mental health. Poster contains images of a person with EEG on their face and an image of a mouse dreaming of a maze and replaying memories. 
Deadline is stated as 31st December. There is a QR code and a website link at the bottom of the poster.
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Erik Herzog @erikherzog.bsky.social · 22/10/2025
#Circadian #medicine tests if treatment timing can improve patient outcomes. This paper by @mariafelicita.bsky.social @oliviawalch.bsky.social et al considers #chronodiagnostics ...how the outcome of a standard test for glioblastoma differs with time of biopsy. link.springer.com/article/10.1...
link.springer.com
Circadian variation in MGMT promoter methylation and expression predicts sensitivity to temozolomide in glioblastoma - Journal of Neuro-Oncology
Purpose Recent studies show that glioblastoma (GBM) is more sensitive to temozolomide (TMZ) in the morning. In cells, inhibiting O6-Methylguanine-DNA-Methyltransferase (MGMT) abolished time-dependent ...
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Gavin Buckingham @drgbuckingham.bsky.social · 25/10/2025
For your enjoyment (by @jagarikin)
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Crystal Rogers, PhD @rogerslabucd.bsky.social · 22/10/2025
Our department @ucdavisvetmed.bsky.social @ucdavis.bsky.social is hiring! We welcome research that diversifies or complements existing strengths in gastrointestinal, neuroimmune, musculoskeletal, cardiorespiratory systems and/or developmental biology. @socdevbio.bsky.social @ascbiology.bsky.social
Faculty Position in Anatomy, Physiology & Cell Biology
We are seeking an outstanding integrative physiologist (broadly
defined) for the position of Assistant Professor (tenure track) to join
our faculty in the Department of Anatomy, Physiology, and Cell
Biology in the School of Veterinary Medicine (SVM), UC Davis. Our
department is a highly integrated group of faculty studying molecular,
cellular, physiological, and pathophysiological mechanisms of health
and disease. The candidate should have an active research program
that focuses on interdisciplinary physiology research using state-of-
the-art approaches. We welcome research which diversifies our
expertise, and/or that which complements existing strengths in
gastrointestinal, neuroimmune, musculoskeletal, cardiorespiratory
systems as well as developmental biology. Candidates are expected
to expand access to education and provide opportunities in research
for students, trainees, and the community across various life and
professional experiences.
• Candidates must possess a PhD and postdoctoral experience in
physiology or a related field.
• Aptitude/experience in teaching broad-based physiology or
functional anatomy to professional or graduate students.
• Experience with grant writing.
• Excellent interpersonal and communication
skills, and a demonstrated ability to work
cooperatively and collegially within a diverse
community.Sunrise at UC Davis School of Veterinary Medicine Sunrise in Davis CA
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Marcos Aranda @marcosaranda.bsky.social · 21/10/2025
Nice to find my research images decorating the department offices 🙂
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UC Berkeley @ucberkeleyofficial.bsky.social · 08/10/2025
Teresa Puthussery, a UC Berkeley vision scientist whose insights into the retina could one day help those with vision loss regain their sight, has been named a 2025 MacArthur “genius” Fellow. news.berkeley.edu/2025/10/08/v...
news.berkeley.edu
Vision scientist Teresa Puthussery receives MacArthur ‘genius’ award - Berkeley News
Puthussery’s discoveries about the retina are paving the way for new treatments for eye disease and vision loss
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allen institute @alleninstitute.org · 07/10/2025
Introducing CellTransformer, a new AI tool developed with UCSF that makes it easier to explore massive neuroscience datasets and identify important subregions of the brain. 🧵
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Víctor Calbiague-García @victorcalbiagueg.bsky.social · 07/10/2025
🚨 New preprint out from our lab! 📄 The Rod Bipolar Cell Pathway Contributes to Surround Responses in OFF Retinal Ganglion Cells 👉 www.biorxiv.org/content/10.1...
biorxiv.org
The Rod Bipolar Cell Pathway Contributes To Surround Responses In OFF Retinal Ganglion Cells
Sensory neurons can be influenced by stimuli beyond their receptive field center, yet the mechanisms underlying this surround modulation remain poorly understood. In the retina, many OFF ganglion cell...
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Marcos Aranda @marcosaranda.bsky.social · 30/09/2025
Our paper is out today! In @tiffmschmidt.bsky.social lab, we identified a single transcription factor, BRN3B, that shapes multiple, key features that define diverse ipRGC subtypes🧬👁️🐭
urldefense.com
Genetic tuning of retinal ganglion cell subtype identity to drive visual behavior
Nature Communications - This study reveals that graded expression of the transcription factor BRN3B fine-tunes the identity and function of melanopsin-expressing ipRGC subtypes in the retina....
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Olivier Marre @oliviermarre.bsky.social · 03/06/2025
In case this is helpful for anyone, here is a post on how to get a job in french academia : trialsanderrors.substack.com/p/getting-a-... Aimed at non-french scientists who are curious, but french ones may find it useful too.
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Manuel Spitschan @mspitschan.bsky.social · 21/04/2025
Delighted to announce this spring semester's programme for our Seminar Series "Current Topics in Circadian & Visual Neuroscience", featuring a roster of speakers discussing their cutting-edge research in vision and/or circadian rhythms. Register now! www.tscnlab.org/seminar
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Daniel Kerschensteiner @kerschensteiner.bsky.social · 21/04/2025
The ON/OFF dichotomy is fundamental to visual processing. In a new study led by Flori Soto, we identify a conserved molecular mechanism establishing the OFF pathway. rdcu.be/eikoa
rdcu.be
Molecular mechanism establishing the OFF pathway in vision
Nature Communications - LRFN2 in cone photoreceptors is vital for building the OFF pathway. Here authors report this cell-adhesion molecule stabilizes contacts with OFF bipolar cells, clusters...
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Talia Lerner @talialerner.bsky.social · 22/04/2025
Pleased to share the final published version of @glopez.bsky.social's work in @currentbiology.bsky.social! www.sciencedirect.com/science/arti... "Region-specific nucleus accumbens dopamine signals encode distinct aspects of avoidance learning" Congrats, Gaby!!!
sciencedirect.com
Region-specific nucleus accumbens dopamine signals encode distinct aspects of avoidance learning
Avoidance learning—learning to avoid bad outcomes—is an essential survival behavior. Dopamine signals are widely observed in response to aversive stim…
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