system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How exactly does the brain store information?
gpt
Information and stimuli comes into your brain trough your senses: smell, sounds, vision, etc. Most of this if filtered before you even realise it. The relevant stimuli then comes into the working memory, which contains information you are using right now (like when you are calculating, the numbers are in your working memory) and is fairly limited. You can only hold 4-7 'chuncks' of information in there. When the information is repeated or you pay more attention to it, it will go to the short term memory. For example, you repeated a phone number a few times, so you can put it in your phone. Most of this information is discarted, but some will go to the long term memory. This is mostly information you pay attention to and repeat often, which is important to you or which you relate to stuff you already know. That is why, for example, you remember a name of a person better if you relate it to a fact you are familiar with.

How we store it, we don't know. Some say pictures, some say words, some say something abstract, certain nerve patterns, to name a few.