Central mechanisms of odour object perception.

Central mechanisms of odour object perception.
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DOI:
10.1038/nrn2883
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发表时间:
2010-09
影响因子:
34.7
通讯作者:
Gottfried, Jay A.
Gottfried, Jay A.
中科院分区:
医学1区
文献类型:
--
作者:
Gottfried, Jay A.

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自然产生的气味的刺激复杂性给旨在将外部嗅觉环境内化的中枢神经系统带来了独特的挑战。大脑对行为相关气味的感知表征进行编码的一种机制是将不同的嗅觉输入合成为一种统一的感知体验——一种气味客体。最近的证据表明,嗅觉刺激的识别、分类和辨别依赖于梨状皮质中气味客体的形成和调节。来自人类和啮齿动物模型的一致研究结果表明,嗅觉性质和类别的分布式梨状集合模式对于维持生态上不稳定刺激的感知恒常性至关重要。
The stimulus complexity of naturally occurring odours presents unique challenges for central nervous systems that are aiming to internalize the external olfactory landscape. One mechanism by which the brain encodes perceptual representations of behaviourally relevant smells is through the synthesis of different olfactory inputs into a unified perceptual experience — an odour object. Recent evidence indicates that the identification, categorization and discrimination of olfactory stimuli rely on the formation and modulation of odour objects in the piriform cortex. Convergent findings from human and rodent models suggest that distributed piriform ensemble patterns of olfactory qualities and categories are crucial for maintaining the perceptual constancy of ecologically inconstant stimuli.
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