Sleep very important for various aspects of brain function.
This includes cognition, concentration, productivity and performance (1).
All of these are negatively affected by sleep deprivation. A study on medical interns provides a good example. Interns on a traditional schedule with extended work hours of more than 24 hours made 36% more serious medical errors than interns on a schedule that allowed more sleep (2).
Another study found that short sleep can negatively impact some aspects of brain function to a similar degree as alcohol intoxication (3).
Good sleep can maximize problem-solving skills and enhance memory. Poor sleep has been shown to impair brain function.