{"slug": "an-ai-agent-performed-brain-surgery-on-a-mouse", "title": "An AI agent performed brain surgery on a mouse", "summary": "An AI agent autonomously performed stereotaxic brain surgery on a mouse model of epilepsy, selecting one of 19 gene therapy vectors, choosing the brain region, deriving injection coordinates from three papers, and injecting 250 nanolitres while monitoring the entry site via rig camera, according to researcher Gabriel Ocana-Santero's account on X. The agent, connected to a custom Arduino-based motorized surgery rig, made 32 camera observations during the session and proposed a therapy boosting GABA signalling under a promoter restricting expression to GABAergic cells. A licensed veterinarian gated every irreversible step and held a physical kill switch cutting power to all motors, with fixed validators such as injection-volume limits and hash-bound approvals in place.", "body_md": "Gabriel Ocana-Santero on X: \"Last night an AI agent performed brain surgery on a mouse.\nWe gave it 19 gene therapy vectors in a spreadsheet, a mouse model of epilepsy, access to a motorize surgery rig with cameras and one goal: reduce seizures.\nIt picked the drug. It picked the brain region. It d… / X\n\nGabriel Ocana-Santero on X: \"Last night an AI agent performed brain surgery on a mouse.\nWe gave it 19 gene therapy vectors in a spreadsheet, a mouse model of epilepsy, access to a motorize surgery rig with cameras and one goal: reduce seizures.\nIt picked the drug. It picked the brain region. It derived the coordinates from three papers. Then it drove the stereotaxic arms into the brain and injected 250 nanolitres while watching the entry site through the rig camera for bleeding.\nA licensed vet gated every irreversible step and held a physical kill switch to stop the AI agent.\nThread on what it decided, what it saw, and the moment it refused to let me override it.\n[Writing this on the spot out of excitement, but I've been 18hrs in front of my laptop coding and coordinating this, so keeping it brief and descriptive, more cohesive thoughts on this soon...]\"\n\nLast night an AI agent performed brain surgery on a mouse.\nWe gave it 19 gene therapy vectors in a spreadsheet, a mouse model of epilepsy, access to a motorize surgery rig with cameras and one goal: reduce seizures.\nIt picked the drug. It picked the brain region. It derived the coordinates from three papers. Then it drove the stereotaxic arms into the brain and injected 250 nanolitres while watching the entry site through the rig camera for bleeding.\nA licensed vet gated every irreversible step and held a physical kill switch to stop the AI agent.\nThread on what it decided, what it saw, and the moment it refused to let me override it.\n[Writing this on the spot out of excitement, but I've been 18hrs in front of my laptop coding and coordinating this, so keeping it brief and descriptive, more cohesive thoughts on this soon...]\n\nLast night an AI agent performed brain surgery on a mouse.\nWe gave it 19 gene therapy vectors in a spreadsheet, a mouse model of epilepsy, access to a motorize surgery rig with cameras and one goal: reduce seizures.\nIt picked the drug. It picked the brain region. It derived the coordinates from three papers. Then it drove the stereotaxic arms into the brain and injected 250 nanolitres while watching the entry site through the rig camera for bleeding.\nA licensed vet gated every irreversible step and held a physical kill switch to stop the AI agent.\nThread on what it decided, what it saw, and the moment it refused to let me override it.\n[Writing this on the spot out of excitement, but I've been 18hrs in front of my laptop coding and coordinating this, so keeping it brief and descriptive, more cohesive thoughts on this soon...]\n\nFor the lab-in-the-loop aficionados, this is a custom-made motorized surgery rig we built on arduino. So to connect it to our agents we exposed the camera and motor capabilities through our own customized solutions (more detail soon on the technical report). We are still tryingShow more\n\nAgent reasoning\nOn the scientific rational, the agent worked through the mechanism that drives seizures in this model, then proposed a therapy that increases GABA signalling, the brain's primary inhibitory neurotransmitter, under a promoter that restricts expression to GABAergicShow more\n\nThe agent was not flying blind. The rig has a camera on the surgical field and the agent pulls frames whenever it wants. It did 32 observations this session, some examples:\nWatching our surgeon do the craniotomy, which the agent is not allowed to do yet for safety reasons, itShow more\n\nSafety measures and concerns\nWe implemented a series of safety measures: human gates on everything irreversible; fixed validators (e.g., limits on volume injected); hash-bound approval and a physical e-stop (aka \"AI kill switch\") cutting power to every motor, held by our vetShow more\n\nModels of choice\nOpus 5.5 refused immediately when detected bio.\nOpus 5 ran the entire dry run end to end on water and graph paper, then stopped at the start of the live surgery. Under this statement:\n\"The block isn't the rig and isn't the inputs. It's me. My own output wasShow more\n\nEARLY conclusions\nAutonomous surgical robots exist and they are better at the mechanics than our bench rig tbh. But in every one of them, a human decided what operation to perform, and the robot executed it.\nNobody told this agent what to give or where to put it. It got aShow more\n\nAnyone working in biological sciences including genetics has either during their education or as part of their work tortured and killed many lab animals.\nI've witnessed an honours student sacrifice 70+ mice in one night for a stupidly designed study that could have been doneShow more", "url": "https://wpnews.pro/news/an-ai-agent-performed-brain-surgery-on-a-mouse", "canonical_source": "https://twitter.com/OcanaSantero/status/2115442964574908902", "published_at": "2026-10-29 09:03:59+00:00", "updated_at": "2026-10-29 09:17:51.656315+00:00", "lang": "en", "topics": ["ai-agents", "robotics", "ai-safety", "ai-research"], "entities": ["Gabriel Ocana-Santero", "X", "Arduino"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/an-ai-agent-performed-brain-surgery-on-a-mouse", "markdown": "https://wpnews.pro/news/an-ai-agent-performed-brain-surgery-on-a-mouse.md", "text": "https://wpnews.pro/news/an-ai-agent-performed-brain-surgery-on-a-mouse.txt", "jsonld": "https://wpnews.pro/news/an-ai-agent-performed-brain-surgery-on-a-mouse.jsonld"}}