Human brain has a 'limit' on how much information it can process

The human brain has a limit on how much information it can process at once due to a finite energy supply, a new study reveals. UK neuroscientists say that energy supply to the brain remains constant and can't exceed an upper limit, however challenging a task is. But as the brain uses more energy in processing the task at hand, less energy is supplied to processing outside our immediate focus, they say. This results in what's known as'inattentional blindness' – when stimuli that's available in plain sight doesn't register, even if it's valuable to us. This can help explain why we are sometimes unable to concentrate on what our family members are telling us while we're playing video games or watching TV.