Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed. This phenomenon is often __26__ to as the "first-night-effect". Researchers from Brown University found that a network in the left hemisphere of the brain "remained more active" than the network in the right side of the brain. Playing sounds into the right ears (stimulating the left hemisphere) of __27__ was more likely to wake them up than if the noises were played into their left ear.
It was __28__ observed that the left side of the brain was more active during deep sleep. When the researchers repeated the laboratory experiment on the second and third nights they found the left hemisphere could not be stimulated in the same way during deep sleep. The researchers explained that the study demonstrated when we are in a __29__ environment the brain partly remains alert so that humans can defend themselves against any __30__ danger.
The researchers believe this is the first time that the "first-night-effect" of different brain states has been __31__ in humans. It isn't, however, the first time it has ever been seen. Some animal __32__ also display this phenomenon. For example, dolphins, as well as other __33__ animals, shut down one hemisphere of the brain when they go to sleep. A previous study noted that dolphins always __34__ control their breathing. Without keeping the brain active while sleeping, they would probably drown. But, as the human study suggest, another reason for dolphins keeping their eyes open during sleep is that they can look out for __35__ while asleep. It also keeps their physiological processes working.A. classified
您现在的位置： 首页 > 梦之城娱乐平台app下截梦之城娱乐注册网址 > 梦之城娱乐平台app下截梦之城娱乐注册网址阅读 > 梦之城娱乐注册网址阅读真题 > 正文
2017年6月梦之城娱乐平台app下截梦之城娱乐注册网址阅读真题及答案 第2套 选词填空来源:可可梦之城娱乐平台app下截 编辑:max VIP免费外教试听课 | 可可官方微信:ikekenet
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第348期 09-15
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第347期 09-08
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第346期 09-01
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第345期 08-25
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第344期 08-18
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第343期 08-11
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第342期 08-04
- 新编梦之城娱乐注册网址梦之城娱乐平台app每日练习 第341期 07-28