(adj.) Also spelled analogue, describes a device or system that represents changing values as continuously variable physical quantities. A typical analog device is a clock in which the hands move continuously around the face. Such a clock is capable of indicating every possible time of day. In contrast, a digital clock is capable of representing only a finite number of times (every tenth of a second, for example).
If you notice your hands are shaky when pouring a cup of coffee, holding a bridge hand or combing your hair, you may leap to the conclusion you are in the early stages of Parkinson disease. But actually, essential tremor is the most common form of abnormal trembling -- primarily of the hands.
The shaking canât be controlled and most often occurs in the hands, arms, head, and vocal cords. Keep reading: Essential tremor Â» By comparison, people with Parkinsonâs disease typically experience a hand tremor when their muscles are at rest and see a reduction in the tremor when their muscles are in use. Shaky hands can also be caused by: seizure