Apparatus for and method of monitoring movement

An apparatus for monitoring movement, wherein the apparatus comprises for continuous real time monitoring:

• an acceleration unit attachable to or holdable by a body region of a mammal, a maximum mass of the acceleration unit being about 5% of a mass of the body region, the acceleration unit comprising a three-dimensional acceleration sensor and a wireless transmitter for transmitting a measurement signal provided by the acceleration sensor continuously, the measurement signal carrying three-dimensional information about acceleration of the body region;
• a processing unit configured to receive the measurement signal transmitted wirelessly, and process the measurement signal continuously in a band of a medically defined movement of the body region, limit out volitional movement, form a movement index unique for one mammal on the basis of a norm of values of acceleration in a first time window of a known duration, and form a value of amplitude and/or a value of frequency of the spatial movement of the body region on the basis of a power spectral density in second time window of a known duration, the second time window being longer than the first time window;
• and
• a display configured to display said movement index with said value of amplitude and/or said value of frequency of the spatial movement continuously in real time.