When an opera singer breaks a wine glass by singing a very high note, she is using resonance. Resonance is when sound waves strike an object, and the object vibrates in the same manor as the sound wave that hit it. Sound is the vibrating of air particles as they resonate with the particles around them. When your eardrum resonates with the air particles, your brain interprets the vibration as sound. Your eardrum is basically a speaker that mimics sounds made in nature. Air particles do it first, which is how the mimicked vibrations even reach your ears in the first place.
Light works in a similar fashion. Light hits an object, and the object absorbs certain wavelengths while reflecting others. The reflected light takes the shape of the object and is interpreted by the brain after it is mimicked by your eyes.
It is my hypothesis that memories work the same way. Cells in the brain, through resonance, are able to vibrate to mimic things you’ve seen, heard, touched, smelled, and tasted. Under normal circumstances, the memories are dormant and only resonate strongly enough to continue to exist, but increasing the flow of electricity through those parts of the brain causes the memories to become stronger, and you actually experience the sensations that produced the memories on a low level. It’s like a shortcut to actually experiencing something. Rather than wait for the sensor organs to resonate with incoming waves, the brain can interpret sensations that it stored previously as if you are experiencing them all over again.
A great deal can be explained by this, like having a song stuck in your head. Electricity just happens to be passing through the memory of that song in your brain at a rate high enough to cause you to experience the sensation of hearing the music. In dreams, it seems like the senses are being stimulated just as they are when you are awake because the brain is very active when you are asleep, and it isn’t occupied with coordinating body parts and interpreting sensations from outside of it, so it can stimulate a combination of memories very strongly like a composer putting together a sensory symphony. The imagination works in a similar fashion, mixing and matching memories into a scenario that didn’t actually happen but is based on things that did.
It’s like those magnetic toys that move by the action of magnets repelling each other, and the motion is maintained by electricity running through one of the magnets. The brain communicates with electrical impulses, so it is my hypothesis that memories are maintained the same way, by the motion of parts of brain cells begun by resonance and continued by electrical charge.