No abstract

To replicate a previous study, 16 psychophysiological insomniacs were randomly assigned to either Theta feedback or sensorimotor rhythm (SMR) feedback. Evaluations by home sleep logs and by 3 nights in the laboratory were done before biofeedback, immediately after biofeedback, and 9 months later. Results from this study replicate previous findings. Both Theta and SMR feedback seemed effective treatments of insomnia according to home sleep logs. According to evaluations at the sleep laboratory, tense and anxious insomniacs benefited only from Theta feedback but not from SMR feedback, while those who were relaxed at intake but still could not sleep benefited only from SMR but not from Theta feedback.

Fifty-five patients with winter seasonal affective disorder (SAD) were treated with a light visor, a newly developed ,mabie light-delivery system, in a controlled parallel agn. A dim (400 lux) visor was compared with a Wight (6000 lux) visor for either 30 or 60 minutes in the .oming for 1 week. Response rates for these two IrtItments were 36% and 56%, respectively; the duration � treatment sessions did not affect outcome. There was lEY WORDS: Seasonal affective disorder; Phototherapy; light; Circadian rhythms; Seasons; DepressionThe efficacy of bright-light therapy in the treatment of winter seasonal affective disorder (SAD) (Rosenthal et t 1984) has been well established (for reviews see Rosen

Bright light given in the workplace improves subjective ratings of mood, energy, alertness and productivity in SSAD subjects. Morning and afternoon bright lights resulted in similar levels of improvement.