A useful way to understand and describe tremors is to define them according to the following types. Resting tremor occurs when the muscle is relaxed, such as when the hands are lying on the lap or hanging next to the trunk while standing or walking. It may be seen as a shaking of the limb, even when the person is at rest. Often, the tremor affects only the hand or fingers. This type of tremor is often seen in patients with Parkinson's disease.
Noun. 1. invariant-a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it. characteristic, feature-a prominent attribute or aspect of something; the map showed roads and other features; generosity is one of his best characteristics.otation invariant texture image retrieval based on log-polar and NSCT by Xu, Bing; Li, Zhende; Xie, Shiyi / Journal of Digital Information Management.
Noun. 1. distinguishing characteristic-an odd or unusual characteristic. distinctive feature, peculiarity. characteristic, feature-a prominent attribute or aspect of something; the map showed roads and other features; generosity is one of his best characteristics.