Uh what the **** are you talking about?
Porn has been proven to change how the brain operates in relation to sexual stimulation. It' actually changing how your brain functions. That must be one powerful bowl of lucky charms to pull off that.
Meaningless drivel. Every experience you have creates a memory, and every memory is several changes in your brain to store the related sense data. The brain is constantly changing, and porn is not special in that regard.