I’m choosing a musical one not because of my love of music, but actually because the physics involved in this makes the metaphor work. Let my mind be like a bizarre musical instrument, my neurons little strings all at different tensions, all connected to each other. Somehow the vibrations of these strings set off other vibrations in other strings and by a series of conducted vibrations and interferences, you have “thought”. An artificial intelligence researcher specialising in neural networks might call these string tensions “weights” within the network.