References
- Espie C A, Tweedie F M. Sleep patterns and sleep problems amongst people with mental handicap. J Ment Deficiency Res 1991; 35: 25–36
- Feinberg I. Eye movement activity during sleep and intellectual function in mental retardation. Science 1968; 159: 1256
- Castaldo V, Krynicki V. Sleep pattern and intelligence in functional mental retardation. J Ment Deficiency Res 1973; 17: 231–5
- Clausen J, Sersen E A, Lidsky A. Sleep patterns in mental retardation: Down's syndrome. Electoencephalogr Clin Neurophysiol 1977; 43: 83–91
- Petre-Quadens O. Sleep in mental retardation. Sleep and the maturing nervous system, C P Clemente, D P Purpura, F E Mayer. Academic Press, New York 1972; 383–417
- Sasaki H, Nakata H, Murakami S, et al. Orcadian sleep-waking rhythm disturbance in blind adolescence. Jpn J Psychiatry Neural 1992; 46: 209
- Okawa M, Nanami T, Wada S, et al. Four congenitally blind children with arcadian sleep-wake rhythm disorder. Sleep 1987; 10: 101–10
- Short R V. Mektonin. Hormone of darkness. Br Med J 1993; 307: 952–3
- Regestin Q R, Monk T H. Delayed sleep phase syndrome: a review of its clinical aspects. Am J Psychiatry 1995; 152: 602–8
- Diagnostic Classification Steering Committee. International Classification of Sleep Disorders. American Sleep Disorder Association, Rochester, MN. 1990; 128–133
- Lewy A J, Sack R, Singer C. Immediate and delayed effects of bright light on human melatonin production: shifting “dawn” and “dark” shifts the dim light melatonin onset. Ann NY Acad Sci 1985; 453: 253–9
- Morgan R, Minors D S, Waterhouse J M. Does light rather than social factors synchronise the temperature rhythm of psychiatric patients?. Chronobiologica 1980; 7: 331–5