- Sudden micro-sleeps can last from a few seconds to 15 seconds, they take place while doing an activity that should be done fully awake. During micro-sleeps her brain is not receptive to the environment so she will not respond to things that happen around her.
- Automatic responses happen when the person is awake and doing some routine activity, like driving, but she does not respond to what is happening around her. These can last minutes and are potentially very dangerous, depending on the activity that is being performed.
Most of us can say that when we have experienced complete sleep deprivation we still manage to have our productive hours at school or at work. Why? Because of the intervention of our circadian clock: The circadian clock may help us function in an acceptable way in the morning hours and in the evening time. But at the time when our internal clock generates a drive for sleep, which happens around the afternoon and late at night, we might fall asleep in the middle of an activity or task!!!
What happens when a person gets some sleep, but not enough sleep? like when we accumulate our sleep debt? This is known as partial sleep deprivation