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- Bookby Stuart A Montgomery.Contents:
The changing concept of generalised anxiety disorder
How common is generalised anxiety disorder?
Presenting features of generalised anxiety disorder
Comorbidity of generalised anxiety disorder with other conditions
Burden of generalised anxiety disorder
Measuring the severity of generalised anxiety disorder
Pharmacological treatments
Psychological treatment
Which treatments, when and for how long?.Digital Access Springer 2009 - ArticleBesharse JC, Hollyfield JG, Rayborn ME.Science. 1977 Apr 29;196(4289):536-8.The rate of rod outer segment renewal in Rana pipiens tadpoles under constant light and under diurnal conditions of 12 or 2 hours light per day is significantly increased compared to that in animals in darkness. Furthermore, during 24 hours in light after 6 days in darkness the rate of renewal is three to four times that in darkness. In Xenopus laevis tadpoles the rate of renewal is more than five times greater during the first 8 hours of a normal diurnal cycle than during the following 16 hours. These observations demonstrate that bursts of renewal activity occur as a response to light, and suggest that a normal pattern of light alternating with darness plays a fundamental role in the regulation of rod outer segment turnover.