It has long been known as ESP, Spider Sense, or the ability to see things before they happen.
But now scientists have proved that humans really do have a sixth sense - that lets them detect magnetic fields.
Tests have shown that mankind may have the same innate
sense of Earth’s magnetic field that has long been proved to exist in animals.
By putting a protein from the human retina
into fruit flies, researchers noticed that the insect modified its flight path just as if its eye had not been altered.
This suggests that the 'sixth sense' does exist in humans but we might not be aware of it.
Animals use such sight to navigate
long distances during migration or, in the case of birds, to ‘see’ where they are going.
The complex tests involved examining the process by which light goes through a bird’s eye, which has intrigued
the scientific community for more than 30 years.
In the late 1970s, the physicist Klaus Schulten concluded that birds navigate by relying on geomagnetically sensitive biochemical reactions in their eyes.
Tests have shown that the special cells in the eye carry out this function using the protein cryptochrome.
Professor Reppert’s team used wild fruit flies and replaced their version of cryptochrome with the human equivalent then put them in a maze
with each wing wrapped in a metal coil.
They then sent a current through it so that the coil was magnetised in a way which mimicked Earth’s electromagnetic field.
The flies responded in exactly the same way as if they had their own cryptochrome, by either avoiding the magnetic fields or moving towards them if the researchers had placed sugar nearby.
The new study was published in the journal Nature Communications.
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作者: kuangye678 时间: 2011-6-27 12:15
ESP: extrasensory perception(the ability to know things without using the senses of sight, hearing, etc., for example to know what people are thinking or what will happen in the future) 超感知觉
innate: (of a quality, feeling, etc.) that you have when you are born（品质、感情等）天生的；先天的；与生俱来的
retina: a layer of tissue at the back of the eye that is sensitive to light and sends signals to the brain about what is seen（视网膜）
navigate: to find your position and the direction you need to go in（导航；确定……的位置和方向）
intrigue: to make somebody very interested and want to know more about something（激起……的兴趣；引发……的好奇心）
maze: a system of paths separated by walls or hedges built in a park or garden, that is designed so that it is difficult to find your way through（迷宫）
coil: a series of circles formed by winding up a length of rope, wire, etc. （绳索、金属线等的）圈，卷，盘作者: tingroom 时间: 2011-6-28 15:26
i believe humans do have the sixth sense
my house caught fire when i was in high school
i heared the bell of the fire engine when i attended the class, my classroom is far from my house.i felt it is my house and told my deskmate.my deskmate told me don't be woolgather.when i went home,i found my feeling was true.作者: xln1120 时间: 2011-6-28 17:14
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