Rapid Eye Movement Behavior Disorder
Rapid eye movement sleep behaviour disorder (RBD) is a sleep disorder (more specifically a parasomnia) that involves abnormal behaviour during the sleep phase with rapid eye movement (REM sleep). It was first described in 1986.
The major and arguably only abnormal feature of RBD is loss of muscle atonia (paralysis) during otherwise intact REM sleep. This is the stage of sleep in which most vivid dreaming occurs. The loss of motor inhibition leads to a wide spectrum of behavioural release during sleep. This extends from simple limb twitches to more complex integrated movement, in which sufferers appear to be unconsciously acting out their dreams. These behaviours can be violent in nature and in some cases will result in injury to either the patient or their bed partner.
Read more about Rapid Eye Movement Behavior Disorder: Symptoms, Causes, Treatment, Epidemiology, In Non-humans
Famous quotes containing the words rapid, eye, movement, behavior and/or disorder:
“In clear weather the laziest may look across the Bay as far as Plymouth at a glance, or over the Atlantic as far as human vision reaches, merely raising his eyelids; or if he is too lazy to look after all, he can hardly help hearing the ceaseless dash and roar of the breakers. The restless ocean may at any moment cast up a whale or a wrecked vessel at your feet. All the reporters in the world, the most rapid stenographers, could not report the news it brings.”
—Henry David Thoreau (1817–1862)
“It is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God.”
—Bible: New Testament Jesus, in Matthew, 19:24.
“The director is simply the audience. So the terrible burden of the director is to take the place of that yawning vacuum, to be the audience and to select from what happens during the day which movement shall be a disaster and which a gala night. His job is to preside over accidents.”
—Orson Welles (1915–1984)
“He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one.”
—Henry David Thoreau (1817–1862)
“War begets quiet, quiet idleness, idleness disorder, disorder ruin; likewise ruin order, order virtue, virtue glory, and good fortune.”
—Sir Walter Raleigh (1552–1618)