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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
These medications decrease or eliminate both the leg jerks and the arousals. These medications are also successful for the treatment of restless legs syndrome . In one study, co-careldopa was superior to dextropropoxyphene in decreasing the number of leg kicks and the number of arousals per hour of sleep.
A myoclonic seizure (myo "muscle", clonic "jerk") is a sudden involuntary contraction of muscle groups. The muscle jerks consist of symmetric, mostly generalized jerks, localized in the arms and in the shoulders and also simultaneously with a head nod; both the arms may fling out together and simultaneously a head nod may occur.
Restless legs syndrome (RLS), also known as Willis–Ekbom disease (WED), is a neurological disorder, usually chronic, that causes an overwhelming urge to move one's legs. [ 2 ] [ 10 ] There is often an unpleasant feeling in the legs that improves temporarily by moving them. [ 2 ]
The verse could also just mean flowers in general, rather than a specific variety. "In the field" implies that these are the wildflowers growing in the fields, rather than the cultivated ones growing in gardens. Harrington notes that some have read this verse as originally referring to beasts rather than flowers. [6]
Like the knee jerk reflex, the Lazarus sign is an example of a reflex mediated by a reflex arc—a neural pathway which passes via the spinal column but not through the brain. As a consequence, the movement is possible in brain-dead patients whose organs have been kept functioning by life-support machines , precluding the use of complex ...
The lyrics allude to the biblical story of the Battle of Jericho, in which Joshua led the Israelites against Canaan (Joshua 6:15-21). [1]Like those of many other spirituals, the song's words may also be alluding to eventual escape from slavery – in the case of this song, "And the walls came tumblin' down."
The song concerns a friar's duty to ring the morning bells (matines). Frère Jacques has apparently overslept; it is time to ring the morning bells, and someone wakes him up with this song. [3] The traditional English translation preserves the scansion, but alters the meaning such that Brother John is being awakened by the bells.