النوم الطبيعي للانسان. كم عدد الساعات الكافية للنوم؟

National Institute of Neurological Disorders and Stroke Original Publication: 1 December 2000, Updated: 1 December 2007
Thus, the shift in the evening bedtime across cohorts accounted for the substantial decrease in sleep duration in younger children between the 1970s and the 1990s

Severe sleep deprivation causes hallucinations and a gradual progression toward psychosis with increasing time awake.

2
كم من الوقت يمكن للإنسان البقاء مستيقظا ؟
اضطراب النوم عند كبار السن
In: Obstetrics: Normal and Problem Pregnancies
كم عدد الساعات الكافية للنوم؟
"Sleep duration from infancy to adolescence: reference values and generational trends"
Insufficient sleep: Definition, epidemiology, and adverse outcomes In: Atlas of Clinical Sleep Medicine

Iglowstein I, Jenni OG, Molinari L, Largo RH February 2003.

ما هي انماط النوم
[A] more liberal parental attitude toward evening bedtime in the past decades is most likely responsible for the bedtime shift and for the decline of sleep duration
طبيب نفساني دوت كوم
كم من الوقت يمكن للإنسان البقاء مستيقظا ؟