system
Given the following post, respond as if you're commenting on Reddit:
human
How does the brain store data?

How is memory and thought stored within the brain? How then, is this... data conceptualised? 

In a computer, jpeg data translates to an image. But then brain is of course, analog. And information is stored chemically? How is that possible? How is then, say the image of a favorite person stored within the brain? And then, when we recall their face - how does that translate into a mental image?
gpt
The answer is more or less "it's not known", especially as you get up the chain towards "mental image", which we barely even understand phenomenologically.

But, roughly, it's known that information is recorded in the brain through interconnections between neurons. Each neuron connects to many other neurons; when it "fires", it stimulates the connected neuron by a certain amount, based on how strong the synapse connecting the two neurons is. If the receiving neuron is stimulated enough, it also fires, and the signal propagates and maybe does something interesting. These connections are the basic informational unit of the brain, and all higher-order information is ultimately encoded using these primitives.

This is a very low-level description of how brains operate, maybe the equivalent of how a hard drive works. We have SOME higher level understanding, but connecting the dots is difficult. We don't really have a "file-format" level of understanding, how specific images are encoded.