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首页> 外文期刊>Neuron >The nose smells what the eye sees: crossmodal visual facilitation of human olfactory perception.
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The nose smells what the eye sees: crossmodal visual facilitation of human olfactory perception.

机译：鼻子闻到眼睛看到的气味：促进人类嗅觉感知的跨模态视觉促进。

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摘要

Human olfactory perception is notoriously unreliable, but shows substantial benefits from visual cues, suggesting important crossmodal integration between these primary sensory modalities. We used event-related fMRI to determine the underlying neural mechanisms of olfactory-visual integration in the human brain. Subjects participated in an olfactory detection task, whereby odors and pictures were delivered separately or together. By manipulating the degree of semantic correspondence between odor-picture pairs, we show a perceptual olfactory facilitation for semantically congruent (versus incongruent) trials. This behavioral advantage was associated with enhanced neural activity in anterior hippocampus and rostromedial orbitofrontal cortex. We suggest these findings can be interpreted as indicating that human hippocampus mediates reactivation of crossmodal semantic associations, even in the absence of explicit memory processing.
机译：众所周知，人类的嗅觉不可靠，但是显示出了视觉提示的实质性好处，表明这些主要的感觉模态之间存在重要的跨峰整合。我们使用事件相关的功能磁共振成像来确定人类大脑中嗅觉-视觉整合的潜在神经机制。受试者参与了嗅觉检测任务，从而气味或图片被单独或一起传递。通过操纵气味图片对之间的语义对应程度，我们显示了语义一致（相对于不一致）试验的感知嗅觉促进。这种行为上的优势与海马前区和​​前额眶额叶皮质的神经活动增强有关。我们建议，这些发现可以解释为表明，即使在没有显式记忆处理的情况下，人海马介导了跨模式语义关联的重新激活。

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