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[科学美国人60秒] 【整理】SSS 2008-02-06

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SSS 2008-02-06

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60-Second Science: February 6, 2008
Scratching Brings Mental Satisfaction


Brain scans show that scratching does indeed work to decrease unpleasantness. And although it can be pleasurable, scratching doesn't appear to stimulate pleasure centers. Karen Hopkin reports.



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【整理】SSS 2008-02-06【整理人】ZPC224
Transcript

This is Scientific Americans' 60-second Science. I'm Karen Hopkin. This will just take a minute.

When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Baptist Medical Center think they know why. The scientists were wondering why raking fingernails across skin brings us such pleasure. So they looked to the brain. More precisely they looked in the brain. Using advanced imaging techniques the scientists looked to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a guy in a white lab coat with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal cortex which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in a landmark study that appears in the Journal of Investigative Dermatology scratching gets rid of the itch. Me I'm holding out for the study that shows that people bang their heads against the wall because it feels so good when you stop.

Thanks for the minute for Scientific Americans' 60-second Science. I'm Karen Hopkin.

==========
Vocabulary:
Dermatology: n. 皮肤医学, 皮肤病学
hold out for: wait uncompromisingly for something desirable


点!尔何如?鼓瑟希,铿尔,舍瑟而作,对曰:异乎三子者之撰。子曰:何伤乎?亦各言其志也。曰:莫春者,春服既成,冠者五六人,童子六七人,浴乎沂,风乎舞雩,咏而归。夫子喟然叹曰:吾与点也。
Homework

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute.
When you have an itch nothing feels better than a good scratch. Now scientists from W* University back to its Medical Center think they know why. The scientists were wondering why raging finger nose across the skin brings such pleasant. So they looked to the brain more precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case when people are scratched by a gind wind lap coped with a special scratching brush. What they found is scratching does not activate areas in brain normally associated with pleasure while they did booze the activity of the prefrontal curtest which would be involved compulsive behavior. That makes sense. But the major effective scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems relieve the unpleasant feelings that the compty, well, itching. Yet the landmark study appears in the journal of Investigate of Dermatology scratching gets rid of the itch. Me I'm hold the study that chose the people bender heads against the wall because it feels so good when you stop.
Thanks for the minute for Scientific American's 60-second Science. I'm Karen Hopkin.
practise makes perfect
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Homework

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute.
When you have an itch nothing feels better than a good scratch. Now scientists from W* University back to its Medical Center thinking know why. The scientists were wondering why raging finger nose across the skin brings such pleasant. So they looked to the brain more precisely they looked in the brain. Using advanced imagine techniques the scientists look to see which parts of the brain were most active when people scratch or in this case when people are scratched by a gind wind lap coped with a special scratching brush. What they found is scratching did not activate areas in brain normally associated with pleasure while they did booze activity of the prefrontal curtest which can be involved compulsive behavior. That makes sense. But the major effective scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that the compty, well, itching. Yet the landmark study that appears in the journal of Investigate of Dermatology scratching gets rid of the itch. Me I'm hold the afraid study that chose the people bender heads against the wall because of feels so good when you stop.
Thanks for the minute for Scientific American's 60-second Science. I'm Karen Hopkin. biggrin.gif

爱情是2个人的事 世界上最感人的话不是我爱你 而是 我也爱你...

欢迎光临 每日语法练习
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on Silas.teng

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute.
When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Biotics Medical Center think they know why. The scientists were wondering why raking finger nails across skin brings us such pleasure. So they looked to the brain more precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a gind wind lap coped with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal core test which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in the landmark study that appears in the journal of Investigate of Dermatology scratching gets rid of the itch. Me I'm holding * for the study that shows the people bender heads against the wall because of feels so good when you stop.
Thanks for the minute for Scientific American's 60-second Science. I'm Karen Hopkin.
user posted image
We can always do better.
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on lochker

This is Scientific Americans' 60-second Science. I'm Karen Hopkin. This will just take a minute.
When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Baptist Medical Center think they know why. The scientists were wondering why raking finger nails across skin brings us such pleasure. So they looked to the brain more precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a guy in the white lab coat with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal cortex which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in the landmark study that appears in the journal of Investigate of Dermatology scratching gets rid of the itch. Me I'm holding an ear for the study that shows the people bend their heads against the wall because it feels so good when you stop.
Thanks for the minute for Scientific Americans' 60-second Science. I'm Karen Hopkin.
Stay foolish. Stay hungry.
on uivb

This is Scientific Americans' 60-second Science. I'm Karen Hopkin. This will just take a minute.
When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Baptist Medical Center think they know why. The scientists were wondering why weak finger nails across skin brings us such pleasure. So they looked to the brain more precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a guy in the white lab coat with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal cortex which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in the landmark study that appears in the journal of Investigate of Dermatology scratching gets rid of the itch. Me I'm holding an air for the study that shows the people bend their heads against the wall because it feels so good when you stop.
Thanks for the minute for Scientific Americans' 60-second Science. I'm Karen Hopkin.
On forget me not

This is Scientific Americans' 60-second Science. I'm Karen Hopkin. This will just take a minute.

When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Baptist Medical Center think they know why. The scientists were wondering why raking fingernails across skin brings us such pleasure. So they looked to the brain. More precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a guy in the white lab coat with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal cortex which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in the landmark study that appears in the Journal of Investigative /Dermatology scratching gets rid of the itch. Me I'm holding out for the study that shows that people bang their heads against the wall because it feels so good when you stop.

Thanks for the minute for Scientific Americans' 60-second Science. I'm Karen Hopkin.



The happiest moment in my life is when I stay with you~~
实现无障碍英语沟通
Homework

When you have an itch, nothing feels better than a good scratch. Now scientists from W* Forest University * Medical Center think they know why. The scientists were wondering why raking fingernails across skin brings us such pleasure. So they looked to the brain. More precisely, they looked in the brain. Using advanced imaging techniques, the scientists looked to see which parts of the brain are most active when people scratch. Or, in this case, when people are scratched by *in a white lab coat with a special scratching brush.What they found is scratching does not activate areas of the brain normally associated with pleasure. Although it did boost the activity of the * cortex, which can be involved in compulsive behavior.That make sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes, in a *mark study that appears in the Journal of Investigative Dermatology scratching gets rid of the itch. Me, I'm holding out for the study that shows that people * heads against the wall because it feels so good when you stop.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.
普特听力大课堂
hw smile.gif

This is Scientific American’s 60-Second Science. I am Karen Hopkin. This’ll hold just a minute.

When you have an itch, nothing feels better than a good scratch. Now scientists from * Medical Center think they know why. The scientists were wondering why raking finger nails accross skin brings us such pleasure. So they looked to the brain, more precisely, they looked into the brain. Using advanced imaging technique, the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a * wind * * with a special scratching brush. What they found is scratching does not activate areas of brains normally associated with pleasure. Although they did boost the activity of the prefrontal cortex which can involved with compulsive behavior. That make sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sencory experiences. So scratching seems to relieve the unpleasant feeling that accompany, well, itching. Yes, the landmark study that appeared in the journal of Invesgator of Dematology scratching gets rid of the itch, M hold out for the study shows that people * heads against the wall because it feels so good when you start.


Thanks for the minute, for Scientific American’s 60 Second Science. I’m Karen Hopkin.
我真心希望能获得守护她的力量
怀着这份心意
我一直静静的凝视着窗外的风景

好栏目推荐之美国口语俚语
On DaveyZhou smile.gif

This is Scientific Americans' 60-second Science. I'm Karen Hopkin. This will just take a minute.

When you have an itch nothing feels better than a good scratch. Now scientists from Wake Forest University Baptist Medical Center think they know why. The scientists were wondering why raking fingernails across skin brings us such pleasure. So they looked to the brain. More precisely they looked in the brain. Using advanced imaging techniques the scientists look to see which parts of the brain are most active when people scratch or in this case, when people are scratched by a guy in the white lab coat with a special scratching brush. What they found is scratching does not activate areas of the brain normally associated with pleasure, although it did boost the activity of the prefrontal cortex which can be involved in compulsive behavior. That makes sense. But the major effect of scratching was to decrease the activity of brain regions associated with unpleasant sensory experiences. So scratching seems to relieve the unpleasant feelings that accompany, well, itching. Yes in a landmark study that appears in the Journal of Investigative /Dermatology scratching gets rid of the itch. Me I'm holding out for the study that shows that people bang their heads against the wall because it feels so good when you stop.

Thanks for the minute for Scientific Americans' 60-second Science. I'm Karen Hopkin.


I'm going to be a millionaire!
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