Mind over Time_mindovertime
Mind over Time由刀豆文库小编整理，希望给你工作、学习、生活带来方便，猜你可能喜欢“mindovertime”。
Mind over Time-------By Mark Caldwell
After I read this article, I want to write something about this.This article writes about the things between our mind and time.It told us if our living clock has been changed, our life will change a lot.In this article, it gives us some examples like Mr.jack’s life changed
The poibilities raised by the discoveries on the workings of the biological clock go beyond moodine and depreion.It may seem a remote or even a fanciful ailment, especially during the summer, when its effects ebb, but it can throw the entire year, not to mention a whole life, into terrible turmoil.In the brain, a recently discovered cluster of nerve cells called the suprachiasmatic nucleus, or SCN, appears to be at the heart of timekeeping.In mammals, the organ is remarkably reliable: even if it's removed from an experimental animal and placed in a dish, it can continue to keep time on its own for at least a day.The SCN is actually a pair of structures, like most parts of the brain.One half sits in the left hemisphere and one in the right, just behind and a bit below the eyes.“Each is made up of about 10 000 densely packed neurons,” explains Steven Reppert, the Harvard neurobiologist whose laboratory has been a key player in recent discoveries.“The SCNs are located just above where your optic nerves come together at the base of the brain.” This is no accident: the SCN depends on light for what circadian-clock experts call entertainment － synchronizing the inner clock with the cycles of light and darkne in the world outside.Some of the latest research, on mice, suggests that mammals have a set of special photoreceptors in their eyes, which pick up light signals and carry them directly to the SCN.These photoreceptors are different from the rods and cones used to perceive light hitting the retina.Not everyone has the problem.Most people aren't as vulnerable to a lack of
morning light, which helps keep the inner clock in tune with the external environment.Every morning, the light of dawn makes its way to the SCN and advances the inner clock, allowing it to catch up with local time, rousing and easing us into daytime activity in bliful synchrony with local time.And because the nerve pathway from the eyes into the SCN bypaes those parts of the brain that register conscious sight, the inner clock can react to ambient light even when we're sound asleep.The light of dawn penetrates the eyelids, registers on the retina, and relays a silent signal into the SCN.If the internal clock has a tendency to run slow, morning light automatically shifts it ahead, putting it back in step with the world outside.It's beautifully simple unle you live far enough above the equator so that in winter you're up, breakfasted, and at work before dawn.In fact, SAD seems to be more common in northern
latitudes.When natural light is scarce, the best way to reset the inner clock is with a burst of artificial light.We must keep our life benefits, if we not, our body will give punishment to us.And it will change our life, makes our life difficult.In this article, I found many difficult words, it means I need to improve my vocabulary, and there are also some difficult sentences I can’t understand, I should learn some grammar
