Brains are not hard drives.I would rather describe it as an organ that adapts to the inputs on the keyboard in the long run. The more often a pipe is used between two flaps, the firmer it becomes. The smallest storage unit cannot therefore be described or even addressed in concrete terms. So, in contrast to digital memory, there is no 1 and 0 with a certain place, but every thought, every emotion and every sensory impression is composed of the way that the air in the organ takes to the pipes. Or perhaps as a better analogy: a mine full of dwarves. This is made up of long tunnels, and each tunnel has a gate at the end, at the gate a more or less large amount of dwarfs is waiting for what happens. For example, if the dwarf sees something in the optic nerve on the eye, it sends depending on how much it sees, how bright it is, etc. several dwarfs. They run to the gate (synapse) at the end of their gait (neuron) and communicate how many dwarfs should continue to run through knocking signs at the gate (neurotransmitter). There the next dwarves run off. Now, however, memory is slowly beginning to set in. Because the dwarves regularly see something, different paths have come up for each message, because every time the dwarf recovers on the way back, it expands the path a bit. It reinforces the walls, builds signposts and lamps. For example, the message is “red”, so depending on what the knocking signs say one or more dwarves continue to the next gate on the path that has occurred for all that is red, possibly. also past several gates, and everywhere a zweg arrives and knocks and runs back to the starting point. For example, also on the paths for cherry, car and fire brigade. They are also well developed in the connection and run straight away, that the rind crashes. Unlike the door to “blue”. The connection is used so little that the path behind the door is only a bumpy narrow and half-collapsed hole. So when the eye sees red, it has learned and realized that it doesn’t see blue, and so the probability of us remembering a blue light, a violet or the blue sky (all paths on the main fad of see/blue) when we see red is rather low , because the path between color perceptions is usually less developed. But via a detour, the wild hustle and bustle of the dwarves can still reach the dwarves in the blue corridors, because e.g. a thought is running that says: sky and red and not blue, time in the evening, evening red, etc.
It is not so easy to tell from this hustle and bustle at the molecular level where the memory is now.At least at the macromolecular level, it is in the networking of the individual neurons and the way in which stimulus impulses and synaptic reactions process an initial impulse. The dwarfs’ running in response to a stimulus thus generates feedback from the shape of the brain coils, which in turn causes new stimulus reactions and even allows reflection. So to speak, a standing wave in the continuous process of generating thought, which, like this, generates abstract thoughts by retrieving different memories or creating its own reflection. However, the memory only remains in the form of contextual links. If the demented corridors collapse in old age, memory may therefore be lost. However, the defective elements are not atomic units (except for robots with positron brains) but concrete cells that, as I said, store or forget their information through their connections and their stability or their absence. Until the cells finally break down in old age and usually no longer regenerate. For if they were to do so all the time, the painstakingly built connections would constantly break during the division of the nerve cell, or the corridors to the other gates would collapse.