【摘 要】
：
A finite set of phonetic units is used in human speech.How our brain recognizes these units from speech stream,as we do in visual object recognition,is still largely unknown.The revealing of this neur
【机 构】
：
Tsinghua University
【出 处】
：
国际听觉科学研讨会(fint2016)
论文部分内容阅读
A finite set of phonetic units is used in human speech.How our brain recognizes these units from speech stream,as we do in visual object recognition,is still largely unknown.The revealing of this neural mechanism may lead to the development of speech brain computer interfaces and intelligent speech recognition systems.In this study,we used intracranial EEG(iEEG)from human auditory cortex to decode phonetic units during the perception of continuous speech.We identified neural populations over Heschl gyrus(HG),superior temporal gyrus(STG)and superior temporal gyrus(STS)that showed selective response to specific Chinese vowel complex or its constituent parts.The high-gamma activity of all these electrodes was further combined to separate sets of phonemes into clusters.The clustered organization largely coincided with phonetic categories defined by place of articulation,similar as that has been found in English(Mesgarani et al,2014).
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