Joint Representation of Spatial and Phonetic Features in the Human Core Auditory Cortex.
Joint Representation of Spatial and Phonetic Features in the Human Core Auditory Cortex.
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人类核心听觉皮层空间和语音特征的联合表示。
DOI:
10.1016/j.celrep.2018.07.076
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发表时间:
2018
期刊:
影响因子:
8.8
通讯作者:
Mesgarani,Nima
中科院分区:
文献类型:
--
作者:
Patel,Prachi;Long,LauraK;Herrero,JoseL;Mehta,AsheshD;Mesgarani,Nima
The human auditory cortex simultaneously processes speech and determines the location of a speaker in space. Neuroimaging studies in humans have implicated core auditory areas in processing the spectrotemporal and the spatial content of sound; however, how these features are represented together is unclear. We recorded directly from human subjects implanted bilaterally with depth electrodes in core auditory areas as they listened to speech from different directions. We found local and joint selectivity to spatial and spectrotemporal speech features, where the spatial and spectrotemporal features are organized independently of each other. This representation enables successful decoding of both spatial and phonetic information. Furthermore, we found that the location of the speaker does not change the spectrotemporal tuning of the electrodes but, rather, modulates their mean response level. Our findings contribute to defining the functional organization of responses in the human auditory cortex, with implications for more accurate neurophysiological models of speech processing.
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1073/pnas.211209098
发表时间:
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