Rapid eye movement sleep behavior disorder or REM behavior disorder (RBD) is a sleep disorder in which people act out their dreams. It involves abnormal behavior during the sleep phase with rapid eye movement (REM) sleep. The major feature of RBD is loss of muscle atonia (i.e., the loss of paralysis) during otherwise intact REM sleep (during which paralysis is not only normal but necessary). The loss of motor inhibition leads to sleep behaviors ranging from simple limb twitches to more complex integrated movements that can be violent or result in injury to either the individual or their bedmates.RBD is a very strong predictor of progression to a synucleinopathy (usually Parkinsons disease or dementia with Lewy bodies). Melatonin is useful in the treatment of RBD. RBD was first described in 1986. Classification
RBD is a parasomnia. It is categorized as either idiopathic or symptomatic. Idiopathic RBD is the term used when RBD is not associated with another ongoing neurological condition. When it results from an identifiable cause, RBD is referred to as symptomatic RBD (and considered a symptom of the underlying disorder). Characteristics
RBD is characterized by the dreamer acting out their dreams, with complex behaviors. These dreams often involve screaming, shouting, laughing, crying, arm flailing, kicking, punching, choking, and jumping out of bed. The actions in an episode can result in injuries to oneself or ones bedmate. The sleeping person may be unaware of these movements. Dreams often involve violent or aggressive actions, and an attack theme like being chased by people or animals.
She further argues that vases showing "a boy standing perfectly still as a man reaches out for his genitals" indicate the boy may have been "psychologically immobilized, unable to move or run away." One vase shows a young man or boy running away from Eros, the Greek god of desire. Ancient Rome
In Latin, mos Graeciae or mos Graecorum ("Greek custom" or "the way of the Greeks") refers to a variety of behaviors the ancient Romans regarded as Greek, including but not confined to sexual practice. : 72   Homosexual behaviors at Rome were acceptable only within an inherently unequal relationship; male Roman citizens retained their masculinity as long as they took the active, penetrating role, and the appropriate male sexual partner was a prostitute or slave, who would nearly always be non-Roman. In Archaic and classical Greece, paiderasteia had been a formal social relationship between freeborn males; taken out of context and refashioned as the luxury product of a conquered people, pederasty came to express roles based on domination and exploitation. : 37, 40–41 et passim  Slaves often were given, and prostitutes sometimes assumed Greek names regardless of their ethnic origin; the boys (pueri) to whom the poet Martial is attracted have Greek names. The use of slaves defined Roman pederasty; sexual practices were "somehow Greek" when they were directed at "freeborn boys openly courted in accordance with the Hellenic tradition of pederasty".