We have the same problem in medicine, its called Alarm Fatigue. During sedation there are alarms for just about every parameter that we monitor: absolute blood pressure, mean blood pressure, heart rate, oxygen concentration in the blood, carbon dioxide concentration in the breath, body temperature, and more. You can commonly have two or three alarms just on the border of triggering on and off and on and off and on and off throughout a many hour case. The brain can only concentrate on one thing at a time.