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| H | Hallucination is called any false and distorted perception of events and / or objects. It may possibly appear in the result of tiredness, caused by insomnia.
Homeostasis is called the tendency or the ability of a cell or an organism to keep internal equilibrium by having adjusted its internal processes.
Homeostatic Regulation of Sleep is the term, which has something to do with the neurobiological signals that work by mediating the pressure or urge to sleep.
Hypersomnia is the term, which is used to describe excessive sleep. This phenomenon may be characterized by recurrent episodes of some unusual daytime sleepiness and / or prolonged nighttime sleep. Most people, who suffer from hypersomnia feel like having several naps during the daytime, as a rule at the most inappropriate times of the day, like at work, during the meal or conversation, etc.
Hypnagogic Hallucination is called a so – to – say “greater – than – life – like” dream experience. It may possibly be associated with narcolepsy.
Hypnic Jerk is the term, which describes any startle reaction after a person has fallen asleep. The muscles can be jerking like under the electric shock influence. This phenomenon is considered to be quite usual and normal.
Hypnogram is a summary of the electric activities, which occur during the person’s night’s sleep, shown in a graphical way.
Hypothalamus is the name of the part of the brain, which is situated below the thalamus. The function of the hypothalamus is to regulate body temperature as well as the metabolic processes of every organism.
Hypnotics are called medications, which cause sleep or partial loss of consciousness.
Hypocretin is the term, which is used to describe a peptide, involved in sleep cycles.
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