Auditory Cortical Neurons Respond to Somatosensory Stimulation
Auditory Cortical Neurons Respond to Somatosensory Stimulation
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DOI：
10.1523/jneurosci.23-20-07510.2003
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发表时间：
2003-08
期刊：
影响因子：
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通讯作者：
K. Fu;T. A. Johnston;Ankoor S. Shah;L. Arnold;J. Smiley;T. Hackett;P. Garraghty;C. Schroeder
中科院分区：
文献类型：
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作者：
K. Fu;T. A. Johnston;Ankoor S. Shah;L. Arnold;J. Smiley;T. Hackett;P. Garraghty;C. Schroeder
皮层感觉处理的流行层次模型认为，早期处理是特定于个人的形式和信息的组合从不同的形式被推迟到更高阶的处理阶段。在本文中，我们提出的生理证据多感觉会聚在早期阶段的皮层听觉处理。我们使用多神经元簇记录，沿着有限样本的单单位记录，以确定猕猴听觉皮层中的神经元是否对皮肤刺激作出反应。我们发现caudomedial听觉皮层，一个区域躺在A1附近，并在第二阶段的听觉皮层层次的共同延伸的皮肤和听觉反应。听觉皮层中的体感-听觉会聚可能是人类研究中观察到的效应的基础。在皮层感觉处理的早期阶段，来自不同感觉方式的输入的收敛对于我们对多感觉处理的理解和对单感觉处理的既定观点都具有重要意义。
The prevailing hierarchical model of cortical sensory processing holds that early processing is specific to individual modalities and that combination of information from different modalities is deferred until higher-order stages of processing. In this paper, we present physiological evidence of multisensory convergence at an early stage of cortical auditory processing. We used multi-neuron cluster recordings, along with a limited sample of single-unit recordings, to determine whether neurons in the macaque auditory cortex respond to cutaneous stimulation. We found coextensive cutaneous and auditory responses in caudomedial auditory cortex, an area lying adjacent to A1, and at the second stage of the auditory cortical hierarchy. Somatosensory-auditory convergence in auditory cortex may underlie effects observed in human studies. Convergence of inputs from different sensory modalities at very early stages of cortical sensory processing has important implications for both our developing understanding of multisensory processing and established views of unisensory processing.