3 ms·
Dopamine as the mediator molecule foe comparison of actual vs expected experiences, very interesting indeed. Seems to add a tiny sliver more evidence to my str
by austinjp 11y ago
Dopamine as the mediator molecule foe comparison of actual vs expected experiences, very interesting indeed.
Seems to add a tiny sliver more evidence to my strong suspicion that the brain contains "emulators", the output from which arrives milliseconds before perception arrives from The Real World, allowing for pseudo-Bayesian updating of the emulator(s), and of the whole-brain representation of the world, it's effect on us, and our effect on it.
I come to this from a neuromusculoskeletal perspective, which is where I first started reading about emulators. But I suspect they're a brain-wide phenomenon, accounting for all sorts of oddness, including apparent "lag" in consciousness.
More in my previous comments https://news.ycombinator.com/item?id=9931041 https://news.ycombinator.com/item?id=9931041
- amelius 11y agoBy "emulators", do you perhaps mean "predictors"?
- Phemist 11y agoThis view is quite common in computational neuroscience. Rather than calling it Real World emulators, they call it predictive coding[1][2]. Models that are able to predict statistical properties of "percepts", are able to store these percepts in a much smaller coding scheme (information-wise). These models generate predictions continuously (or emulate the Real World), and only update themselves if supplied with sufficiently contrasting information. 1. http://www.ncbi.nlm.nih.gov/pubmed/10195184 http://www.ncbi.nlm.nih.gov/pubmed/10195184 2. https://en.wikipedia.org/wiki/Bayesian_approaches_to_brain_function https://en.wikipedia.org/wiki/Bayesian_approaches_to_brain_f...