Slate Star Codex wrote:Hobson, Hong and Friston say that dreams are an attempt to refine model complexity separately from model accuracy. That is, a model is good insofar as it predicts true things (obviously) and is simple (this is just Occam’s Razor). All day long, your brain’s generative model is trying to predict true things, and in the process it snowballs in complexity; some studies suggest your synapses get 20% stronger over the course of the day, and this seems to have an effect on energy use as well – your brain runs literally hotter dealing with all the complicated calculations. At night, it switches to trying to make its model simpler, and this involves a lot of running the model without worrying about predictive accuracy. [...]
Some machine learning people I talked to took a slightly different approach to this, bringing up the wake-sleep algorithm and Boltzmann machines. These are neural net designs that naturally “dream” as part of their computations; ie in order to work, they need a step where they hallucinate some kind of random information, then forget that they did so. I don’t entirely understand these either, but they fit a pattern where there’s something psychiatrists have been puzzling about for centuries, people make up all sorts of theories involving childhood trauma and repressed sexuality, and then I mention it to a machine learning person and he says “Oh yeah, that’s [complicated-sounding math term], all our neural nets do that too.”
Meno_ wrote:Irrellus , could it also work the other day , reducing the chemical to biological markers, which create the chemical storm? If so, which is more 'causative' the productive effect or, the reductive process toward the genetic markers? Or even function in tandem with different genetic/effective levels changing variable markers? Can, do, dreams function as compensatory tools to slow down and even reverse cognitive dissonance in either way?
For instance the dream of falling may serve as some kind of warning that conscious behavior as cognitive , awaken progression :/values, etc.\ can become progressively disjointed ? From cohesion, stability , certainty
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Urwrongx1000 wrote:
....Dreams are a distortion of reality.
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