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SUMMARY:NBIO Presents:  Arif Hamid\, PhD (University of Minnesota Twin Cities)
DESCRIPTION:On the Principles of Dopamine Release in Dorsal Striatum\nIn this talk\, I will present evidence that dopamine (DA) release across the striatum unfolds not as a global broadcast but as structured spatiotemporal waves that tailor reward signals to the computational specialties of distinct frontostriatal circuits. I will argue that these waves resolve a key spatiotemporal credit assignment problem by vector-weighting regional decision signals to facilitate a dynamic reprioritization of policy gating. I will outline our recent analysis of fundamental activational principles\, demonstrating that DA fluctuations follow lawful\, linear oscillatory dynamics captured by a generalized DA wave equation\, and provide empirical evidence for circuit interactions that generate\, propagate\, and constrain these DA activity primitives. Together\, our studies provide an empirically informed revision of an enduring “global broadcast” hypothesis about DA-RPE signals\, clarifying the circuit and dynamical mechanisms underlying DA’s role in reinforcement learning. \n Health Sciences G328 and Zoom
URL:https://nbio.uw.edu/event/nbio-presents-arif-hamid-university-of-minnesota-twin-cities-2/
LOCATION:Health Sciences G-328
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://nbio.uw.edu/wp-content/uploads/2025/09/ArifHamid-Headshot2-e1763760408446.jpg
ORGANIZER;CN="UW NBIO":MAILTO:nbio@uw.edu
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DTSTART;TZID=America/Los_Angeles:20251204T190000
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SUMMARY:Neuroscience\, AI\, and Society: Cory Doctorow "The Reverse-Centaur’s Guide to Criticizing AI"
DESCRIPTION:“The Reverse-Centaur’s Guide to Criticizing AI”\nAI can’t do your job\, but an AI salesman can convince your boss to fire you and replace you with an AI that fails to do your job. Being a smart AI critic requires that you distinguish between these two cases\, because otherwise\, you’re just gonna help that fast-talking sales person to put you on the breadline and screw over everyone who relies on your work. \nBio: Cory Doctorow (craphound.com) is a science fiction author\, activist\, and journalist. He is the author of dozens of books\, most recently ENSHITTIFICATION: WHY EVERYTHING SUDDENLY GOT WORSE AND WHAT TO DO ABOUT IT (nonfiction); and the novels PICKS AND SHOVELS and THE BEZZLE (follow-ups to RED TEAM BLUES). Other notable books include the solarpunk novels WALKAWAY and THE LOST CAUSE; the tech policy books THE INTERNET CON and CHOKEPOINT CAPITALISM; and the internationally bestselling YA LITTLE BROTHER series; and the picture book POESY THE MONSTER SLAYER. He maintains a daily blog at Pluralistic.net. He works for the Electronic Frontier Foundation\, is an AD White Professor at Cornell University; an MIT Media Lab Research Affiliate; a Visiting Professor of Computer Science at Open University; a Visiting Professor of Practice at the University of North Carolina’s School of Library and Information Science. He co-founded the UK Open Rights Group. Born in Toronto\, Canada\, he now lives in Los Angeles. In 2020\, he was inducted into the Canadian Science Fiction and Fantasy Hall of Fame. In 2022\, he earned the Sir Arthur Clarke Imagination in Service to Society Awardee for lifetime achievement. In 2024\, the Media Ecology Association awarded him the Neil Postman Award for Career Achievement in Public Intellectual Activity. York University (Canada) made him an Honourary Doctor of Laws; and the Open University (UK) made him an Honourary Doctor of Computer Science. \nAccessibility questions: Contact: cncadmin@uw.edu
URL:https://nbio.uw.edu/event/neuroscience-ai-and-society-cory-doctorow-the-reverse-centaurs-guide-to-criticizing-ai/
LOCATION:Samuel E. Kelly Ethnic Cultural Center\, 3931 Brooklyn Ave NE\, Seattle\, WA\, 98105\, United States
CATEGORIES:Seminar
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ORGANIZER;CN="UW Computational Neuroscience Center (CNC)":MAILTO:compneuro@u.washington.edu
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