The relationship of alpha and delta EEG frequencies to pain and mood in 'fibrositis' patients treated with chlorpromazine and L-tryptophan

Electroencephalography and Clinical Neurophysiology
H Moldofsky, F A Lue

Abstract

Aspects of sleep stage evaluation and analysis of alpha and delta EEG frequencies in sleep were shown to be related to musculo-skeletal pain and mood disturbance in patients with 'fibrositis syndrome'. Patients were treated at bedtime for 3 weeks with either chlorpromazine, 100 mg (8 patients), or L-tryptophan, 5 g (7 patients). Chlorpromazine, but not L-tryptophan, was associated with increased slow wave sleep and amelioration of pain and mood symptoms. Mean percent time/min or mean percent power/min of alpha frequency during NREM and REM sleep corrlated with overnight increase in pain measures, hostility, and decrease in energy. On the other hand, mean percent time/min of delta in NREM sleep was related to overnight decrease in pain and mean percent delta power/min was associated with decreased anxiety and hostility, and increased energy.

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