论文信息 - Time course of narrow frequency bands in the waking EEG during sleep deprivation.

Time course of narrow frequency bands in the waking EEG during sleep deprivation.

Electroencephalograms (EEGs) of 14 normal subjects were recorded every 2 h during 38 h constant routines. Adjacent narrow frequency bands (NFB) with similar temporal trends were grouped into frequency clusters. Clusters I (2.00-7.75 Hz) and III (11.00-14.75 Hz) exhibited similar time courses which may reflect both the duration of time awake and a circadian modulation. Cluster II (8.00-10.75 Hz) was characterized by a time course similar to the circadian modulation of core body temperature. Cluster V (18.00-24.75 Hz) was correlated with subjective sleepiness and may reflect the increasing effort made by subjects to perform the task as sleep deprivation lengthened. Various NFB in the waking EEG may reflect different physiological mechanisms underlying variations in vigilance states.

[1] J. Foret,et al. Diurnal variation in subjective and objective measures of sleepiness: the effects of sleep reduction and circadian type. , 1986, Chronobiology international.

[2] S. Sheather,et al. Clinical applications of visual analogue scales: a critical review , 1988, Psychological Medicine.

[3] D. Dijk,et al. Circadian and sleep/wake dependent aspects of subjective alertness and cognitive performance , 1992, Journal of sleep research.

[4] W. R. Adey,et al. Contamination of scalp EEG spectrum during contraction of cranio-facial muscles. , 1974, Electroencephalography and clinical neurophysiology.

[5] T. Åkerstedt,et al. Subjective and objective sleepiness in the active individual. , 1990, The International journal of neuroscience.