Changes of sleep adaptation in hospitalized patients with depression.
Sleep adaptation in an unfamiliar environment, the so-called "first-night effect", is known to occur in healthy individuals. To avoid the confounding effects of the "first-night effect", the first-night sleep data are not used in most of sleep studies. In the present study, we examined changes of sleep adaptation in hospitalized patients with depression. Polysomnographic recordings were obtained for two consecutive nights from 14 patients, and sleep parameters were compared between both nights. Total sleep time, sleep latency, awakening times, movement awakening time, sleep efficiency, sleep architecture, rapid eye movement (REM) sleep latency, REM intensity, REM density, REM time, REM cycles, and other indicators showed no significant difference (p > 0.05) between the first and second nights. To conclude, hospitalized patients with depression have relatively less change in sleep adaptation, thus, the data from their first night do not need to be discarded.
Department of Neurology, The Sixth People's Hospital affiliated with Shanghai Jiaotong University, 600 Yishan Road, Shanghai, 200233, People's Republic of China.
Shasha
S
Song
Zhi
Z
Geng
Shutao
S
Zhai
Jie
J
Xu
Gang
G
Hou
Xinbao
X
Zhang
D000222:Adaptation, Physiological; D000328:Adult; D003866:Depressive Disorder / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM