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Free Energy Principle — Karl Friston

Serious Science

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  • Recommended by 2 people, in Hacker News, across 2 different months.
  • Presented by Karl Friston, neuroscientist at UCL, as the video describes them

Assumes interest and some biology. Education, not medical advice.

170K views9 years ago2 recommendations

Brain and nervesNeuroscience

Karl Friston explains the free energy principle and how the brain acts as a predictive organ to minimize surprise.

Neuroscientist Karl Friston from UCL on the Markov blanket, Bayesian model evidence, and different global brain theories. Read the text version here: serious-science.org/free-energy-principle-7602 Get a bigger picture:  1. Dynamic Causal Modelling — Karl Friston: youtu.be/RXTizOtvsE8 2. Spatial Navigation — Neil Burgess: youtu.be/94HekWSIqLM 3. Cognitive-Enhancing Drugs — Barbara Sahakian: youtu.be/UqZoTcy5w8A Follow us: LinkedIn: linkedin.com/company/serious-science/    Twitter: twitter.com/scienceserious FB: facebook.com/serious.scie... Instagram:  instagram.com/serious.sci... Support us on Patreon to see more videos: patreon.com/SeriousScience

Why it's here

2 people recommend this

What people say. Recommended as a helpful high-level introduction to predictive coding and the brain's statistical processing.

jchookin Hacker News • Recommends

On “Karl Friston: a neuroscientist who might hold the key to true AI”

I found this interview with Karl Friston helpful to understand free energy principle from a high level: link to this video

frereubuin Hacker News • Recommends

On “Brains Speed Up Perception by Guessing What’s Next (2019)”

…ctivation of circuits even there depending on whether people were presented with real words (e.g. sheep) or non-words (e.g. brast). I think there's a lot to be said for conceptualising the brain as a statistical machine - it makes a lot of sense in evolutionary terms. There's a great video introduction to that idea with Karl Friston from UCL here: link to this video…

frereubuin Hacker News • Mentions

On “Brains Speed Up Perception by Guessing What’s Next”

This ties in quite nicely with Karl Friston's Free Energy Principle: link to this video There are so many strands of neuroscience that show predictive coding now. There's a really nice example in the use of common vs unusual words in sentences. If you're using fMRI to scan someone while they read these two sentences: The jam on the motorway made everything slow. The jam on the motorway made everything sticky. You'll see a flash of activity when people read the word "sticky" rather than the more common word in that context "slow". The theory is that when everything in the sentence proceeds as predicted there's very little need to update prior expectations, but when you come across something that goes ag…

soulofmischiefin Hacker News • Mentions

On “Ask HN: What weird or hard problems are you trying to solve?”

…ormation processing as a matter of physical processes, you can see that the correct semantics can be necessary for producing a physical outcome. I think I understand what you're saying and it touches on some of my own inquiries. A more concrete example, if you have one, might better help align me with where your thoughts are at regarding this. 0 link to this video…