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⚡️GREG_CORDER⚡️

@flybottleescape.bsky.social
910 followers 421 following 214 posts

Associate Professor @ Penn | Dept Psychiatry + Dept Neuroscience + Dept Anesthesiology | Pain • Placebo • Poppies • Psychedelics corderlab.com

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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
8/8 🌎 The bigger goal: precision pain control in nociceptive x mu-opioid circuits Via our gene therapy to mimic morphine analgesia in the cortical circuits where it works, or harness descending placebo circuits to recruit midbrain endogenous opioids: www.cell.com/neuron/fullt...
cell.com
Top-down control of the descending pain modulatory system drives multimodal placebo analgesia
Livrizzi, Chang-Weinberg, et al. identify a cortical-brainstem circuit that mediates top-down control of pain during placebo analgesia and find that pain relief is gated by endogenous opioids in the v...
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
7/8 ACC activity also tracked spontaneous pain-directed behaviors as they unfolded That brings us closer to the ongoing affective-motivational experience of chronic pain
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
6/8 After nerve injury, the signal became stronger ACC→dlPAG responses to aversive stimuli were potentiated during chronic pain A pathway that normally organizes protective action may become amplified when pain persists, turning adaptive responses into a maladaptive state
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
5/8 recording the pathway in real time 🔬 ACC→dlPAG activity rose sharply across several aversive experiences The size of the neural response predicted how long the animal responded afterward, directly linking circuit activity to the magnitude of pain-driven behavior
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
4/8 We saw the same striking split in chronic neuropathic pain … Inhibiting ACC→dlPAG neurons reduced cold avoidance and prolonged attending and escape after nerve injury, without eliminating stimulus detection This circuit seems to control what pain compels an animal to do
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
3/8 Then we asked what this pathway actually does to shape pain behavior Silencing ACC→dlPAG neurons reduced hot-place avoidance and pain-directed attending, but spared fast reflexes and sensory thresholds Mice still detected the threat. They were less driven to act on it
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
2/8 First, the wiring 🧠 Layer 5 excitatory ACC neurons project to the dorsolateral PAG and preferentially make functional connections with excitatory dlPAG neurons Injury recruits both regions, revealing a cortical-midbrain pathway positioned to shape the pain experience
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 04/09/2026
🚨🧠📄 @biorxivpreprint.bsky.social: L5 ACC engages dlPAG to facilitate affective pain First, map opioid+ pain ACC neurons: nature.com/articles/s4158… Next, ID endogenous opioid control across PAG: pmc.ncbi.nlm.nih.gov/articles/PMC11��� Now, we link the ACC→dlPAG circuit: biorxiv.org/content/10.648…
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Lindsay🧠 @neuromelody.bsky.social · 29/07/2026
Best news ever- I have finally earned my PhD in Neuroscience!!🧠 My thesis was completed in the lab of Dr. Gregory Corder @flybottleescape.bsky.social & is titled: “Opioidergic Organization of the Nociceptive Medial Thalamus & A Behavioral Model of Placebo Analgesia”
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 23/06/2026
🔥
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 10/06/2026
👀
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 09/06/2026
There already is a $ cap: grants.nih.gov/grants/guide...
grants.nih.gov
NOT-OD-22-049: Notice of Change to NIHs Policy on Special Council Review of Research Applications
NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Notice of Change to NIHs Policy on Special Council Review of Research Applications NOT-OD-22-049. NIH
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 24/05/2026
Sitting on 1st percentile at NIDA since June 2026. Had a 5th percentile at NINDS get SCR’d and it was just rejected … starting over
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 18/04/2026
you've got my vote, Ted! ✅
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 17/04/2026
🔥🔥🔥🔥🔥🔥🔥🔥✌🏼
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 17/04/2026
Congrats, Matt and team! 🔥 🍾 Stoked that @bakspace.bsky.social and I could collab w yall 👇🏼 Activity capture + chemogenetic reactivation of a placebo analgesia ensemble in the vlPAG is sufficient to drive pain relief on demand … via input from mPFC and outputs to RVM ! 💊 🧠 ⚡️
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/04/2026
media.tenor.com
a woman with glasses says it 's sucking my will to live !
ALT: a woman with glasses says it 's sucking my will to live !
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Lindsay🧠 @neuromelody.bsky.social · 30/03/2026
Had such a great time presenting my PhD research at this year’s US Association for the Study of Pain conference in Philadelphia. @usasp.bsky.social #neuroskyence #painresearch
woman smiling and pointing to a research poster, surrounded by two listeners
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 23/03/2026
luckily theres like 10 more pain meetings for some reason this year to catch up at !
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Reposted by ⚡️GREG_CORDER⚡️
Nature Biotechnology @natbiotech.nature.com · 24/02/2026
Research Highlight: Targeting the affective dimension of pain www.nature.com/articles/s41...
nature.com
Targeting the affective dimension of pain - Nature Biotechnology
Nature Biotechnology - Targeting the affective dimension of pain
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 25/02/2026
Good
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Kristin Andrews 🇨🇦🇺🇸 @kristinandrews.bsky.social · 13/01/2026
The Stanford Encyclopedia of Philosophy just published a revised entry on Animal Consciousness! By Michael Trestman, Jonathan Birch, Colin Allen @wileyprof.bsky.social @birchlse.bsky.social plato.stanford.edu/entries/cons...
plato.stanford.edu
Animal Consciousness (Stanford Encyclopedia of Philosophy)
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 29/01/2026
!!!!! TENURE !!!!!
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 28/01/2026
i am always shocked at the number of papers without verification of fiber placement or check if their AAV expressed etc ... and when i am a reviewer and ask for it then sometimes i have gotten wildly "offended" resposnes from authors
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 28/01/2026
actually, someone in lab sent me this: AAVretro inject into ~ Cg2 ... those look like labeled anterior insula in this iamge ... but we do not see posterior insula
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Proceedings of the National Academy of Sciences @pnas.org · 22/01/2026
By splitting #pain into its component parts, researchers provide pain relief in #mice. In PNAS Journal Club: ow.ly/eHT750Y1eGh #ChronicPain #opioid #MachineLearning #AnteriorCingulateCortex
After a gentle touch to a mouse’s injured paw, a brain region involved in the emotional side of pain lights up, as seen in this mouse brain cross-section. The blue and pink signals mark genes that switch on when neurons become active. This allowed the researchers to map a pain-responsive hotspot and then target a specific opioid-related circuit. Image credit: Gregory Corder, Corinna Oswell, and Nora McCall
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 27/01/2026
!!! Same… also the histology in this part’s gig 1 just looks like bleed thru?
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 15/01/2026
thank you! we didnt try the combo therapy+morphine .... could be intersting to look at something like cross-tolerance, or is there something else you think we should try out
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 10/01/2026
✌🏼🤠🙏🏼😁🤘🏽
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 09/01/2026
🔥🍾🙌🏼😎🎉
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
🙏🏼😎🙌🏼🤠🤘🏽
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
🙏🏼😎🙌🏼🤠🤘🏽
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
🙏🏼😎🙌🏼🤠🤘🏽
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
🙏🏼😎🙌🏼🤠🤘🏽
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
Please check out the Peer Review file to see how our publication process unfolded ... as well as the Supplementary Information file for expanded Discussion Notes 1-7 👇 nature.com/articles/s41...
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
Brought to you by the 6+ years of dedication from these amazing scientists ... Huge congrats to the co-First authors: Corinna Oswell, Sophie Rogers, Justin James ... and co-Senior authors: Eric Yttri, Karl Deisseroth, Ben Reiner
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
15/ 🚀 LUPE + AMPS + ACC pLick neurons + mMORp = blueprint for decoding and treating affective pain Spontaneous behavior is the readout Cortex is the control panel And we just built a new switch nature.com/articles/s41... #Neuroscience #Pain #DeepLearning #GeneTherapy
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
14/ 💥 Key insight: Spontaneous pain isn’t random—it’s structured, stateful, and encoded in affective brain circuits The ACC selects actions to reduce pain unpleasantness And now, we can decode those states, track their dynamics, and intervene in real time
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
13/ 🧠📷 Activating this therapy silenced pain-related ACC activity and reduced LUPE-AMPS pain behaviors—just like morphine But there was no reinforcment (less risk of addiction) A new, non-opioid way to control cortical pain dynamics
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
12/ 🧬 Could we mimic morphine’s effects—but without opioids? We engineered a synthetic MOR promoter (mMORp) that drives chemogenetic inhibition only in opioid-sensitive, pain-encoding ACC neurons A targeted, biologically informed strategy for precision pain managment
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
11/ ⏱️ In chronic pain, yes, mice show spontaneous licking behavior (no need to do CPP) pLick neurons became less selective and less responsive Morphine rescued this—restoring lick-locked activity and state decoding The better the neural rescue, the lower the pain scores
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
10/ 📉 Morphine didn’t just reduce behavior—it silenced specific ACC neurons active during pain states We discovered “pLick neurons” whose activity predicts licking probability Morphine suppressed pLick neurons in a state- and behavior-dependent manner
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
9/ 🧠 LUPE-AMPS tracking + neural data revealed that ACC activity predicts transitions between latent pain states We could decode spontaneous behaviors like licking directly from ACC population activity Spontaneous neural activity is not noise—it encodes affective decisions
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
8/ 🏛️ Enter the ACC: a cortical hub for affective pain We did in vivo calcium imaging with miniscopes in freely behaving mice across acute capsaicin injury and SNI chronic neuropathic injury This let us track how ACC neural ensembles reorganize as pain becomes chronic
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
7/ 👅Licking is an affective-motivational behavior emerging during Pain States This structure supports the original Gate Control Theory that rubbing/licking is an antinociceptive negative feedback loop to reduce pain Pain drives licking → licking reduces pain → licking stops
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
6/ 📈 To quantify this, we built a new metric: the Affective-Motivational Pain Scale (AMPS) AMPS captures the bidirectional effects of both injury and analgesia A single, continuous index of spontaneous pain state occupancy across models (formalin, capsaicin, SNI)
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
5/ 🔍 Using Markov modeling + unsupervised clustering, we identified 6 reproducible latent states in pain models Some states (like Pain State-4) were selectively increased by injury and suppressed by morphine Pain is not binary—it’s multivalent, dynamic, and opioid-sensitive
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
4/ 📊 LUPE revealed a constellation of pain-related behaviors—especially recuperative paw licking We used these to define latent behavioral states that evolve over seconds to minutes Each state reflects a distinct pain “mode”—not a single action, but a strategy
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⚡️GREG_CORDER⚡️ @flybottleescape.bsky.social · 08/01/2026
3/ 🐭 We built LUPE: a deep-learning system that tracks spontaneous, naturalistic behaviors in mice at high resolution No pokes, no prods—just the animal alone with its pain This allows us to ask: how does pain actually change what an animal does?
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