sleep spindle


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sleep spin·dle

the electroencephalographic record of 14-per-second bursts of wave frequency seen on EEG examination.

sleep spindle

Electroencephalographic waves with a frequency of 12 or 14 cycles per second that appear during sleep and may participate in sleep maintenance. They become less frequent with aging.
See also: spindle
References in periodicals archive ?
Sleep spindles are widespread, and occur in different intracerebral structures at the time of scalp spindles.
Hori, "Fast sleep spindle (13-15 Hz) activity correlates with sleep-dependent improvement in visuomotor performance," Sleep, vol.
(i) Obstructive sleep apnea distorts sleep spindle process.
These episodic patterns have been best studied in relation to sleep neurophysiology and include sleep spindles, the so-called 'up-down' state of slow sleep rhythms and K-complexes.
The spectrogram clearly indicates the presence of sleep spindles (Figure 2(d)).
The physical description defines the spectral (frequency and intrafrequency) and temporal (shape and duration) properties of the sleep spindle.
"While it has been shown previously that targeted memory reactivation can boost memory consolidation during sleep, we now show that sleep spindles might represent the key underlying mechanism," says Bernhard Staresina of the University of Birmingham in the United Kingdom.
While the napping participants slept, the researchers conducted electroencephalograms (EEGs) of their brains, looking for bursts of electrical activity called "sleep spindles" (an indication of memory consolidation) in a key memory region called the hippocampus.
He proposed that spike and wave paroxysms as EEG substrate of absences emerge from the same circuit that normally produces sleep spindles and the former are epileptic transformation of sleep spindles.
This effect may be due in part to sleep spindles, waves of electrical activity that have been linked to memory processing during sleep.
Characteristic to this stage are sleep spindles and K-complexes shown in the example.