Communication Sounds and their Cortical Representation

Communication Sounds and their Cortical Representation
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通讯声音及其皮质表征

DOI:
10.1007/978-1-4419-0074-6_16
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Kanwal
Kanwal
中科院分区:
--
文献类型:
--
作者:
Kanwal

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大多数哺乳动物的交流声音具有共同的声学特性,这些声学特性来自信息承载元件(IBE),恒定频率音调,频率调制和噪声突发。IBE包含信息承载参数(IBP),诸如频率和幅度、持续时间和幅度调制。在听觉皮层(AC)区域的神经元激活中,IBP可以以连续尺度映射和/或以斑块分布表示。对不同IBP的响应的映射或斑块分布的空间叠加产生了神经元(热点)对某些IBP组合的局部敏感性。AC上的伽马波段振荡可能会绑定热点活动,从而产生声音的“意义”。对交流声音中的三个基本含义--吸引、凝聚、厌恶--的感知反映了从AC到额叶皮层的腹侧流中一种简单的处理形式。
Communications sounds of most mammals have common acoustic properties that derive from the information bearing elements (IBEs) constant-frequency tones, frequency modulations, and noise bursts. IBEs contain information bearing parameters (IBPs) such as frequency and amplitude, duration, and amplitude modulations. IBPs may be mapped in continuous scales and/or represented in patchy distributions in the activation of neurons in fields of the auditory cortex (AC). The spatial superposition of the maps or patchy distributions of responses to different IBPs creates local sensitivities of neurons (hot spots) to certain IBP combinations. Gamma-band oscillations across the AC may bind the hot spot activities leading to the “meaning” of sounds. The perception of the three basic meanings – attraction, cohesion, aversion – in communication sounds reflect one simple form of processing in the ventral stream from the AC to the frontal cortex.
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