Jorge,
Thanks for the tips! I'll try them. I had migraines for a short period (monthly for 5 years) about 20 years ago including the aura and headache. Relaxation techniques really helped me with that...I haven't had one since that time.
The hearing thing makes sense. I've noticed in myself and other people with impaired hearing that concentration patterns seem to be altered somewhat.We have an increased tendancy to tune out the world sometimes. (We can't follow what's going on, so we entertain ourselves by daydreaming...)