Visual influences on ferret auditory cortex.
Visual influences on ferret auditory cortex.
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DOI：
10.1016/j.heares.2009.06.017
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发表时间：
2009-12
期刊：
影响因子：
2.8
通讯作者：
King, Andrew J.
中科院分区：
文献类型：
--
作者：
Bizley, Jennifer K.;King, Andrew J.
关键词：
现在已知多感觉神经元广泛分布在皮质的低水平区域，通常被认为负责特定形式的处理。听觉皮质提供了一个特别明显的例子，它对视觉和躯体感觉刺激都有反应。雪貂的单神经元记录研究表明，使用生理和解剖学标准描述的每个听觉区域也接受视觉输入，初级区域的视觉敏感神经元的发生率从15%到20%，到高级区域的大约50%或更多。虽然一些神经元对视觉刺激表现出尖峰反应，但这些输入往往具有阈值下的影响，调节皮质神经元对声音的反应。通过检查视觉输入的来源以及它们如何改变听觉皮质神经元的处理能力，可以获得对视觉输入可能扮演的角色的洞察。这些研究表明，视觉输入到听觉皮质的功能之一是强化通常在那里发现的相对不精确的空间编码。因为这种情况在不同的皮质区域发生的程度不同，对多感觉相互作用的研究也有助于理解它们对听觉感知的相对贡献。
Multisensory neurons are now known to be widespread in low-level regions of the cortex usually thought of as being responsible for modality-specific processing. The auditory cortex provides a particularly striking example of this, exhibiting responses to both visual and somatosensory stimulation. Single-neuron recording studies in ferrets have shown that each of auditory fields that have been characterized using physiological and anatomical criteria also receives visual inputs, with the incidence of visually-sensitive neurons ranging from 15% to 20% in the primary areas to around 50% or more in higher-level areas. Although some neurons exhibit spiking responses to visual stimulation, these inputs often have subthreshold influences that modulate the responses of the cortical neurons to sound. Insights into the possible role played by the visual inputs can be obtained by examining their sources of origin and the way in which they alter the processing capabilities of neurons in the auditory cortex. These studies suggest that one of the functions of the visual input to auditory cortex is to sharpen the relatively imprecise spatial coding typically found there. Because the extent to which this happens varies between cortical fields, the investigation of multisensory interactions can also help in understanding their relative contributions to auditory perception.
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影响因子：
9.2
作者：
Freeman, Elliot;Driver, Jon
通讯作者：
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影响因子：
16.2
作者：
Kayser, Christoph;Montemurro, Marcelo A.;Panzeri, Stefano
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影响因子：
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作者：
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DOI：
10.1093/cercor/bhl128
发表时间：
2007-09
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
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作者：
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通讯作者：
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影响因子：
2.5
作者：
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