Almost anyone can recall the scene at the end of Ghostbusters. The big bad ghost tells all four Ghostbusters that they must choose their death. Whatever pops in their minds will be the end of them. Raymond (Dan Akroyd) thinks of the "Stay-Puffed Marshmallow Man." What a great movie. New York City is soon to be eaten alive by one big marshmallow.
Again, deaferentation is a trainable ability of the brain. The brain learns to ignore other stimuli except for where it's focus is. It takes time to train the mind to produce that precious ability to ignore other stimuli and focus on something else. In our case, music and guitar. Luckily it doesn't take much effort, and there certainly isn't as much at stake unless you are a Ghostbuster.
I will say it once more, but certainly not for the last time: Five minutes of practice per day is all you need when you are just starting guitar. High quality of attention brings huge musical gifts.