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发表于 2009-5-12 00:11
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原帖由 wandashan 于 2009-5-12 00:01 发表 
LZ,你懂科学吗?你知道什么是自然科学,什么是人文科学吗?你这种人,要么是无知,要么是无耻,但是,至少是不知道天高地厚,既然你想把自然科学和人文科学统一起来,你为什么不写信给中科院和社科院的院长啊,告诉 ...
K,翻得我累S。这是一篇较典型的文章,发表在2004年的美国科学杂志上,作者是Norman M. Weinberger。
如果大家对此有兴趣,可以和我一起去搜索一下类似的文献自己来看。这种翻译的苦活儿我不做了。[s:18] [s:18] [s:18]
一项由McGill学院的Anne Blood和Zatorre在2001年进行的对应试验(对应和弦和情绪的关系)力图更好地确定大脑中那些部位对于音乐产生情绪的反应。该项试验使用了温和的情绪刺激因素,既那些人会产生不同感受的和协和不和协和弦。和协的和弦通常是那些频率之间为简单比率关系的音的组合。一个例子就是中音C(大约在260Hz)和中音G(大约390Hz)。他们频率之间的比率为2:3,能够形成一种令人愉悦的“纯五度”声音。相反地,中音C和升C(大约390Hz)频率之间的关系就较为“复杂”,为8:9,听上去通常感觉不舒服,“粗糙”的。
但是那种体验的基本大脑作用机理是什么?实验个体在听到和协和弦和不和协和弦时对其进行的PET(正子发射断层)影像显示,大脑不同的区域参与到了这些不同的情绪反应中。和协和弦往往激活右脑眼窝前额区域(大脑奖励系统的一部分),并且拼胝体下部的一些区域也有反应。相对而言,不和协和弦激活的是右海马旁回。至此,至少两个不同的大脑部分——每个都通常处理不同的情绪——在实验者听到不同和弦时会有反应。但是,听觉系统的不同活动究竟是如何同这些不同的大脑部分的活动相联系的(如果说有联系的话)至今仍未有答案。
以下为原文,全文连接在http://www.sciam.com/article.cfm?chanID=sa006&articleID=0007D716-71A1-1179-AF8683414B7F0000,英语过关的朋友可以自己去看全文:
An imaging experiment in 2001 by Anne Blood and Zatorre of McGill sought to better specify the brain regions involved in emotional reactions to music. This study used mild emotional stimuli, those associated with people's reactions to musical consonance versus dissonance. Consonant musical intervals are generally those for which a simple ratio of frequencies exists between two tones. An example is middle C (about 260 hertz, or Hz) and middle G (about 390 Hz). Their ratio is 2:3, forming a pleasant-sounding "perfect fifth" interval when they are played simultaneously. In contrast, middle C and C sharp (about 277 Hz) have a "complex" ratio of about 8:9 and are considered unpleasant, having a "rough" sound.
What are the underlying brain mechanisms of that experience? PET (positron emission tomography) imaging conducted while subjects listened to consonant or dissonant chords showed that different localized brain regions were involved in the emotional reactions. Consonant chords activated the orbitofrontal area (part of the reward system) of the right hemisphere and also part of an area below the corpus callosum. In contrast, dissonant chords activated the right parahippocampal gyrus. Thus, at least two systems, each dealing with a different type of emotion, are at work when the brain processes emotions related to music. How the different patterns of activity in the auditory system might be specifically linked to these differentially reactive regions of the hemispheres remains to be discovered.
[ 本帖最后由 monkeybiz 于 2009-5-12 01:13 编辑 ] |
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