本条目的部分内容翻译自英语维基百科条目Just noticeable difference并以知识共享-署名-相同方式共享3.0协议授权使用。原文作者列表请参阅其页面历史。

最小可觉差（英语：Just-noticeable difference，JND），为心理物理学（psychophysics）名词。代表人类或者是动物，对于某一特定的感官刺激所能察觉的最小改变。

In the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time. This limen is also known as the difference limen, differential threshold, or least perceptible difference.