嗅觉是一种最基本的感觉，嗅觉的发生与大脑皮层的许多部位密切相关。近年来由于脑功能磁共振成像（fMRI）技术在嗅觉系统的应用，使我们对嗅觉中枢的定位、嗅觉相关行为的脑机制方面的研究取得了一定的进展。在本文中作者在简单介绍嗅觉知识的基础上，着重对嗅觉刺激、fMRI应用、嗅觉相关的脑功能活动等方面的研究进行综述。

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