Effect of age on the sleep EEG: slow-wave activity and spindle frequency activity in young and middle-aged men

doi:10.1016/S0006-8993(96)00770-6

Brain Research

Volume 738, Issue 2, 4 November 1996, Pages 205-212

https://doi.org/10.1016/S0006-8993(96)00770-6 Get rights and content

Abstract

The effect of age on sleep and the sleep EEG was investigated in middle-aged men (mean age: 62.0 years) and in young men (mean age: 22.4 years). Even though the older men reported a higher number of nocturnal awakenings, subjective sleep quality did not differ. Total sleep time, sleep efficiency, and slow wave sleep were lower in the middle-aged, while stage 1 and wakefulness after sleep onset were higher. The difference in wakefulness within nonREM-REM sleep cycles was most pronounced in the third and fourth cycle. In the older men, EEG power density in nonREM sleep was reduced in frequencies below 14.0 Hz, whereas in REM sleep age-related reductions were limited to the delta-theta (0.25 – 7.0 Hz) and low alpha (8.25 – 10.0 Hz) band. Slow-wave activity (SWA, power density in the 0.75 – 4.5 Hz range) decreased in the course of sleep in both age groups. The between-group difference in SWA diminished in the course of sleep, whereas the difference in activity in the frequency range of sleep spindles (12.25 – 14.0 Hz) increased. It is concluded that frequency and state specific changes occur as a function of age, and that the sleep dependent decline in SWA and increase in sleep spindle activity are attenuated with age.

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Effect of age on the sleep EEG: slow-wave activity and spindle frequency activity in young and middle-aged men

Abstract

Electroencephalogr. Clin. Neurophysiol.

Neurobiol. Aging

Brain Res.

Neurosci. Lett.

Electroencephalogr. Clin. Neurophysiol.

J. Psychiatr. Res.

J. Psychiatry Res.

Electroencephalogr. Clin. Neurophysiol.

Electroencephalogr. Clin. Neurophysiol.

Brain Res. Bull.

Physiol. Behav.

All-night dynamics of the human sleep EEG

J. Sleep Res.

Homeostatic sleep regulation in habitual short and long sleepers

Am. J. Physiol.

Normal aging

Sleep in normal and pathological aging

Experientia

Changes in sleep and sleep electroencephalogram during pregnancy

Sleep

Timing of human sleep: Recovery process gated by a circadian pacemaker

Am. J. Physiol.

Contribution of the circadian pacemaker and the sleep homeostat to sleep propensity, sleep structure, electroencephalographic slow waves, and sleep spindle activity in humans

J. Neurosci.