I loved this video by Ray Dalio. Really gives a great macro economic view and explains how he timed 2008.

https://www.youtube.com/watch?v=PHe0bXAIuk0

I use google spreadsheets with some custom logic for the UI and getting data/ etc. Thinking about making it into a web app for fun...

Interesting. I wonder if that could explain the stomach problems I get when taking some pharmaceuticals that are meant to target my central nervous system.

Depending on the drug it could just be that the gut has receptors for common neurotransmitters also used in the brain like serotonin and opiates.

interesting. Have you read up on the new research that shows that DNA from mitochondria leaks out during stress and is treated as a foreign invader?

Maybe this is because I've been watching Maniac but I've been thinking about this. My hypothesis is based upon the idea that the brain's main purpose is to make sense of the world and to do that it makes predictions and theories of "world" as it goes about.

Schizophrenia just seems like this process on overdrive where some of the key processes involved with keeping this overall process stable go awry. One of these minor processes is probably a belief process where the brain classifies things by True / not True. Since minor psychochis can occur to recreational drug users using psychedelics that make their mind more open to ideas, this seems to make sense to me.

It seems more like a defect in attention, but not a deficit; it’s an overabundance of attention to irrelevant details that the brain ascribes significant meaning to. The reason I have this hypothesis is that ADHD patients tend to have lower concentration of dopamine, whereas schizophrenics have a higher concentration than normal.

An example would be ascribing significant meaning to an event that is random. But for the schizophrenic the event isn’t random, it’s the result of a persecutory delusion, at least in the paranoid variant. It looks very close to religious thinking, but in a negative way: “The dry cleaners I go to are secretly a front for a shady government organization that is attempting to study my every action”

On a lower level, the brain has two hierarchies of synapses: a top-down processing hierarchy, driven by the neurochemical AMPA, and the bottom-up processing hierarchy, driven by the neurochemical NMDA. These hierarchies have salience passed back and forth between them by dopaminergic and adrenergic signalling from other brain regions. Whichever side of processing is "dominant" at the time, is training its dual to respond with the signals the active side is receiving, in response to the signals the active side is sending. Additionally, the bottom-up processing hierarchy is wired to your senses and your motor neurons.

In short, the top-down processing hierarchy is "the model", and the bottom-up processing hierarchy is "the evidence." The brain switches between using the evidence to train the model (when the evidence is salient and the model is weak), and using the model to predict and "fill in for" the evidence (when the model is salient and the evidence is noisy.)

It would make a lot of sense to me if psychosis were simply a result of chronically overdriven AMPA signalling, such that evidence is always being "fit to" the existing model, with the bottom-up hierarchy never being granted enough dominance to use the evidence to correct the model.

This is fascinating. I grew up with a schizophrenic parent and relatives. My interpretation has been that the disease is a defect in the systems that weights between internal models and external evidence.

It’s interesting that to know that there might be a fairly straight forward mapping of the to brain chemistry/neural mechanisms.

Do you any references the AMPA signaling pathways and associated neurological structures that you can recommend as a starting point?

Ah interesting. I didn't realize we'd categorized such a hierarchy. Reminds me of something Hoftstadter wrote in one of his earlier books.

I saw schizophrenia described by a person with it as "dreaming while you're wide awake". In a dream, your brain jumps on any details to invent more details to continue the dream. In a dream, if your brain says the dry cleaners are a shady government organization, then that's a valid and successful continuation of the dream, and dream reality bends to that. In waking reality, not so much.

NMDA antagonists usually make it possible to dream while awake. Low NMDA goes with higher dopamine and higher NMDA with norepinephrine. Schizophrenia is said to be associated with poor NMDA signaling (high agmatine, low D-serine/coagonists, high NMDA receptor antibodies, etc).

I've been wondering about dopamine for a while. I seem to have symptoms of both too much and too little dopamine, simultaneously.

Wow, reminds me of Douglas Hoftstadter's analogy based congition theories.

analogies are like entries in a compression dictionary, good analogies are like succinct data structures in their ability to approach the theoretic lower bound.

If the tokens provide utility, e.g. this token is 500gb of storage and adoption, network activity, or technology productivity increases, the value of these utility tokens will go up in value on the market.

So it’s basically like a new commodity. Ether is compared to gas on the Ethereum network for distributed compute for instance.

I think I saw that one of Watson’s engineers is now working on a crypto project. SingularDTV? Heh, shows how much confidence was left in the program.

Cool read. Just found out about sci-kit this weekend. Computer vision is fascinating. Just coding a simple binary filter makes you appreciate the Herculean amount of parallel processes going on in your noggin...

That wasn't the best example. Lots of noise in that high depth shot of a messy cafe + quick movement from the fan. If you look at the end of the new clip, even with high accuracy filtering, you're getting a pretty clean depth image closer up. I'm pretty happy with the D415 so far.