The effect of a 3-day increase of ambient temperature toward the thermoneutral zone on rapid eye movement sleep in the rat.
The effect of a 3-day increase of ambient temperature toward the thermoneutral zone on rapid eye movement sleep in the rat.
复制标题
环境温度连续 3 天升高至热中性区对大鼠快速动眼睡眠的影响。
作者：
Rosenthal,MS;Vogel,GW
This study examined the effect of a 3-day increase of ambient temperature (Ta) from the usual room temperature of 22°C to the rat's thermoneutral zone (TNZ) of 29°C on rapid eye movement (REM) sleep. Other laboratories have reported that brief increases of Ta to the TNZ increased REM sleep and that long-term increases of Ta produced long-term increases of REM sleep. However, these studies were limited by the lack of controls for order effects or by restricted recording times. In the present study, which controlled for order effects, polysomno-graphic recordings for 12 male Sprague-Dawley rats were obtained 24 hours a day for 3 days at an ambient temperature of 22°C and for 3 days at the TNZ of 29°C. In all rats, REM sleep minutes and REM sleep percentage of total sleep time were significantly greater at the higher temperature than at the lower temperature. The increase in REM sleep at 29°C was stable over the 3-day recording period. Prolonged increase of ambient temperature towards the TNZ is a simple, nonpharmacological method of producing a sustained, significant increase of REM sleep in the rat.
