During the first stage of sleep deprivation, the subject is NREM which stands for non-rapid eye movement. In this condition, we are not sleeping in the depth. It can be said as dreamless sleep. On electro-encephalography recording, the brain waves are not fast so they have high voltage.
In this condition, the breathing, heart rate and blood pressure is low. The sleep is comparatively tranquil. NREM lasts for 90 minutes to 120 minutes. It accounts for about 75% of the normal sleep time. Rapid eye movements do not occur.
Answer:
During the first stage of sleep deprivation the subject will become moody, grumpy or irritable.
Explanation:
There are two kinds of sleep deprivation which are classified as acute and chronic sleep deprivation. The acute one is the kind in which patient cannot sleep for one or two nights but in chronic sleep deprivation patient miss the seven hours of sleep per night in a week.
Dr. Ruiz further classified the stages of sleep deprivation as:
