口哨声也能表达语言吗?

口哨声也能表达语言吗? 0:44
最新发布时间: 2018-10-18
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 好的,各位朋友大家好,欢迎收听《科学播报》。受益于科技的迅速发展,今天的我们拥有最为便利的通讯方式。在这些现代电子通讯技术覆盖人们的生活之前,信件、电报等方式等才是大小城市里最为主流的信息传递途径。而在许多地方的乡村,居民则使用着他们独特的方法进行远距离的交流——一种通过口哨声表达的语言。

今天的语言学家仍然对口哨语言知之甚少。首先,在世界上各个使用口哨语言的地方它有着不同的使用规则;其次,在现代科技的冲击下,这种古老的语言已经濒临消亡,今天仅在为数不多的山区里还能听见这些传递信息的哨音。根据最近的一项调查显示,全世界大约仅有七十个地区的口哨语言得到现代技术的记录。不过随着语音学家、心理学家、生物声学研究者、社会学家等各领域人员的加入,口哨语言的神秘面纱正在逐步揭开。

口哨语言不同于传统语言,它不是通过声带的振动产生,而是通过口中的气流表达。这意味着口哨语言并不能表达很多的词汇,但是使用者通过舌头的巧妙变化,已经能够表达足够多的语句。相比我们的说话声,口哨声能够传递的距离更远。尤其是在山谷等地形下,口哨声的传播距离至少是呼喊声的十倍。并且,按照人耳的接收频率范围,口哨声正好处在其中最佳的区域里。也就是说,人耳更容易检测到口哨声的声波。另一方面,口哨语的容错率更高,在30米的距离下,听者依然能够识别出大部分的词汇,并且有八成以上的把握听懂整个句子。因此,科学家们认为在特定条件下,口哨语言甚至可以比正常的口语更为高效。

根据传统观点,大脑的左半球参与各类语言活动。无论是其中的声调、气息还是手势,都在大脑左半球的处理之下。然而口哨语却是一个例外,根据一项听力测试的研究,大脑在接收口哨语言的音节时,两个半球均有相同程度的激活。尽管还需要有进一步的考察,但是对口哨语言的研究无疑可以增加我们对于大脑语言处理方式的理解。在未来的研究中,口哨语言或许能够告诉我们为什么人类简单的音节可以表达出复杂的思想。

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