脑研究专题
http://www.newscientist.com/channel/being-human/brain
 Brain's blood re-routes round clotsAn in-built design feature helps protect our brains against damage caused by blood clots, new research reveals 14 January 2006 | EXPERT GUIDEInstant Expert: The Human BrainThe brain is the most complex organ in the human body. It produces our every thought, action, memory, feeling and experience of the world. This jelly-like mass of tissue, weighing in at around 1.4 kilograms, contains a staggering one hundred billion nerve cells, or neurons. The complexity of the connectivity between these cells is mind-boggling. Each neuron can make contact with thousands or even tens of thousands of others, via tiny structures called synapses. Our brains form a million new connections for every second of our lives. The pattern and strength of the connections is constantly changing and no two brains are alike. It is in these changing connections that memories are stored, habits learned and personalities shaped, by reinforcing certain patterns of brain activity, and losing others. more... |
ARTICLES
Teach your brain to stretch time
Ever wished life was a little less frantic? Need more hours to get things done? The extra time you need is all in your mind, if you know how to find it
Features - 04 February 2006
'Meeting of Minds' says no to thought police
The police, courts and security services should be banned from using brain-imaging technology, lest they look too closely into our thoughts and desires
News - 28 January 2006
Belief special: How evolution found God
In the beginning religion didn't exist, so why did we feel the need to create it, asks evolutionary biologist Robin Dunbar
Features - 28 January 2006
Belief special: What's it all about?
Why did human evolution lead to the invention of God, how does belief affect your brain, and why do we choose to believe in blatant charlatans?
Features - 28 January 2006
Eyes open, but not wide awake
In those first bleary minutes after waking following a good night’s sleep, your cognitive ability may be more impaired than if you had not slept at all
Breaking News - 11 January 2006
How brands get wired into the brain
A new study sheds light on the brain mechanisms which underlie the behavioural preferences which advertisers exploit
Breaking News - 04 January 2006
Do the brainwave boogie-woogie
Improvisation takes on a whole new meaning when you dance to the sound of your own brain
Features - 24 December 2005
Is advertising flogging a dead horse?
The harder advertisers strive to get your attention, the more your brain ignores them.
Features - 24 December 2005
Memory-altering drugs may rewrite your past
Drugs that rid people of terrifying memories could be a lifeline for many. But could they have a sinister side too?
Features - 03 December 2005
Autism linked to malfunctioning 'mirror neurons'
These brain cells allow us to understand the actions and intentions of others
News - 10 December 2005
Coffee's effects revealed in brain scans
Well known for its pick-me-up effect, new scans show coffee stimulating the brain areas in charge of "executive memory", concentration and planning
Breaking News - 01 December 2005
The word: Ambiguity
In the face of equally good visual choices, our brains "decide" what they are seeing, and perhaps gives a glimpse of consciousness at work
The Word - 26 November 2005
How life shapes the brainscape
From meditation to diet, life experiences profoundly change the structure and connectivity of the brain
News - 25 November 2005
Bored monkeys make for stupid monkeys
The richness of a primate's environment affects its brain structure, a new study with marmosets suggests
News - 19 November 2005
Meditation builds up the brain
The practice does more than just make you feel good, it makes you perform better - and alters the structure of your brain
Breaking News - 15 November 2005
Ecstasy may damage the brain’s physical defences
The drug MDMA opens up the blood-brain barrier, reveals a study of rats, leaving the brain vulnerable to invasion
Breaking News - 14 November 2005
Mind readers of the 21st century
Brain imaging has come a long way since the first X-ray investigations of the 1970s. Now researchers can spot a fleeting emotion, a lie, a decision, or the registering of a subliminal image we didn't know we saw. But they still want to look deeper, faster and in more detail so they can tackle more complex tasks such as tracking diseases or understanding intelligence, cognition and even consciousness itself. Alison Motluk looks at a few recent developments in imaging technologies and asks what they are starting to reveal
Careers - 12 November 2005
The word: Connectome
A top neuroscientist's team is hoping to map the vast network of connections in the brain - welcome to the human connectome
Books - 12 November 2005
Women get a bigger buzz from cartoons
A new brain scanning study shows that men and women process humour differently in their brains
Breaking News - 08 November 2005
Marijuana might cause new cell growth in the brain
New nerve cells have been shown to form in rats given a cannabinoid chemical, and this cell growth might even lower depression
Breaking News - 13 October 2005
Eating fish keeps older people brainy
Enjoying a fish meal at least once a week could take three years off the age of an elderly person’s brain – keeping it sharper and quicker
Breaking News - 11 October 2005
Brain disease takes a thousand lives in India
The outbreak of Japanese encephalitis continues to claim lives and will leave many brain-damaged victims in its wake
Breaking News - 30 September 2005
Liars’ brains make fibbing come naturally
The structure of their brains may make it easier for them to think ahead and repress anxieties and the impulse to tell the truth
Breaking News - 30 September 2005
Exercise in old age may rejuvenate your brain
It is never too late for ageing couch potatoes – becoming more active, even at a ripe old age, may help create brand new brain cells
Breaking News - 20 September 2005
Tiny microscope peers into mice brains
A device the size of a matchbox allows biologists to peer under the brain’s surface – and is small enough to be strapped to larger animals in action
Breaking News - 20 September 2005
Human brains enjoy ongoing evolution
New variants of two brain-development genes have swept through the human population during the last several thousand years, biologists reveal
Breaking News - 09 September 2005
Baby comes with brain repair kit for mum
Stray stem cells from growing mouse fetuses can colonise, and may repair, the brains of their mothers - there may be implications for humans, too
News - 20 August 2005
Unsuspected brain cells may cause epilepsy
A study claims an overlooked type of brain cell – not neurons as previously thought – are to blame, raising the possibility of new treatments
Breaking News - 16 August 2005
Pinpointing regret in the brain
Scientists have identified the regions of the brain that are active when we feel regret, and shown how we learn from it
News - 13 August 2005
Brain-chilling chip to switch off seizures
Pumping heat out of the brain could stop crippling epileptic seizures in the seconds before they strike. New Scientist investigates
Features - 16 July 2005
Women's orgasms are a turn-off for the brain
A scanning study reveals that many areas of the female brain deactivate during orgasm, including those involved with emotion
News - 25 June 2005
Brain scans find the penis at last
A combination of an MRI scanner and the stroking of various parts of the male anatomy have revealed where the penis is represented in the brain
News - 25 June 2005
Do games prime brain for violence?
Veteran game-players' brains react to virtual violence in the same way they would if the violence was real, a small brain-scanning study reveals
News - 23 June 2005
Why your brain has a ‘Jennifer Aniston cell’
Single neurons in the human brain seem primed to fire when observing specific and familiar people, whether in photos or sketches
Breaking News - 22 June 2005
Orgasms: a real ‘turn-off’ for women
Many areas of the female brain switch off during orgasm, a brain scanning study reveals, including those regions involved with emotion
Breaking News - 20 June 2005
Neuroscience: What's on your mind?
Neuroscience is revealing more and more about what our brains do when we think. The more we understand, the greater the expectation of solving crucial ethical issues
Essay - 11 June 2005
Mission to build a simulated brain begins
'Blue Brain' will be the first computer to simulate an entire human brain, down to the molecular level - it may help illuminate human consciousness
Breaking News - 06 June 2005
11 steps to a better brain
From smart drugs to brain-friendly diets and from bionic implants to the Mozart effect - follow New Scientist's guide to maximising your brain's potential
Features - 28 May 2005
Essay: Brains wide shut?
Our best hope of understanding human consciousness is to wait for neuroscience to come of age, says neurophilosopher Patricia Churchland
Essay - 30 April 2005
Teenagers special: Brain storm
Some parts of the brain are still developing through adolescence. Could this explain some of teenagers' unique behavioural traits?
Features - 05 March 2005
Brain reconstruction hints at 'hobbit' intelligence
Swollen frontal and temporal lobes suggest the tiny brain of Homo floresiensis may have been remarkably advanced
Breaking News - 03 March 2005
Does 'RNA editing' make us brainy?
Humans edit their genetic information far more extensively than other vertebrates, and especially in brain tissue, research suggests
News - 29 January 2005
Early blindness frees brain-power for hearing
People born blind hear better then those who can see, and it is the brain's visual centre that gives them the edge, a new study suggests
News - 29 January 2005
Active brain cells observed in real time
For the first time, individual neurons have been monitored as they function, with the help of a dye that lights up when the cell is active
News - 22 January 2005
Calculating face values takes two brain areas
Morphing photos of Margaret Thatcher and Marilyn Monroe helps show that separate centres handle the "big picture" and the facial details
News - 18 December 2004
Back pain linked to shrinking brain
Patients with chronic lower back pain can lose cells from specific brain areas but it is unclear which comes first, researchers say
News - 27 November 2004
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