No karaoke for you! Bad wiring spells tone-deaf 唱歌沒調?不
文章來源:未知 文章作者:meng 發布時間:2009-08-22 03:28 字體: [ ]  進入論壇


If you
If you're one of the unlucky people who is tone-deaf, it turns out your brain may have a wiring problem. That's what new research published Wednesday suggests.

Do your friends cover their ears when you sing along with the radio? Does the choir1 director ask you to lip-sync?

If you're one of the unlucky people who is tone-deaf, it turns out your brain may have a wiring problem. That's what new research published Wednesday suggests.

People who are tone-deaf can't detect differences in musical pitch but usually have normal hearing and speech. Tone-deafness runs in families, and estimates of how many people have the problem range from 4 percent to 17 percent.

In the small study done in Boston, brain scans showed there was a difference in a particular brain circuit between those who were tone-deaf and those who weren't. Among the tone-deaf, researchers discovered there were fewer connections between two areas of the brain that perceive and produce sounds.

The study's lead author, Psyche2 Loui, likened the connection to a highway between two islands in the brain.

In tone-deaf people, "there's less traffic on the highway," said Loui, who studies music and the brain at Harvard Medical School and is also a musician.

Loui and her colleagues took brain scans of 20 people, half of them tone-deaf. Those who were tone-deaf had fewer nerve fibers3 between the frontal and temporal regions of the brain, or in some cases the fibers couldn't be detected at all.

The researchers reported their findings in Wednesday's issue of the Journal of Neuroscience.

"It's a new piece in our understanding of tone-deafness and the processes that are involved in the perception of pitch in general," said Nina Kraus of Northwestern University, who wasn't involved in the research.

Loui said the brain connection they examined was long known to be involved in language. "Now that we know which brain pathways to train," she said, there may be ways to help people with tone-deafness, and perhaps those with other language disorders4.


lip-sync: 對口型,假唱

tone-deaf: 音盲,無法分辨音律


1 choir sX0z5     
  • The choir sang the words out with great vigor.合唱團以極大的熱情唱出了歌詞。
  • The church choir is singing tonight.今晚教堂歌唱隊要唱詩。
2 psyche Ytpyd     
  • His exploration of the myth brings insight into the American psyche.他對這個神話的探討揭示了美國人的心理。
  • She spent her life plumbing the mysteries of the human psyche.她畢生探索人類心靈的奧秘。
3 fibers 421d63991f1d1fc8826d6e71d5e15f53     
光纖( fiber的名詞復數 ); (織物的)質地; 纖維,纖維物質
  • Thesolution of collagen-PVA was wet spined with the sodium sulfate as coagulant and collagen-PVA composite fibers were prepared. 在此基礎上,以硫酸鈉為凝固劑,對膠原-PVA共混溶液進行濕法紡絲,制備了膠原-PVA復合纖維。
  • Sympathetic fibers are distributed to all regions of the heart. 交感神經纖維分布于心臟的所有部分。
4 disorders 6e49dcafe3638183c823d3aa5b12b010     
n.混亂( disorder的名詞復數 );凌亂;騷亂;(身心、機能)失調
  • Reports of anorexia and other eating disorders are on the increase. 據報告,厭食癥和其他飲食方面的功能紊亂發生率正在不斷增長。 來自《簡明英漢詞典》
  • The announcement led to violent civil disorders. 這項宣布引起劇烈的騷亂。 來自《簡明英漢詞典》
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