Gallery of Movements
This page shows movement measurements made by the AcuSleep system.
The AcuSleep test measures two types of movements: (a) changes in body position and (b) arm movements. Normally, an arm movement occurs whenever the body position changes. Some arm movements, however, occur without a change in body position. These are called "solo arm movements."The Movement Diagram
The AcuSleep system shows arm movements as vertical lines overlaid on the position diagram. The diagram below is from an AcuSleep study of a normal 5-year-old girl. Each vertical line indicates a solo arm movement. In the figure below, lighter-colored vertical lines have been added at each moment a change occurs in body position. The periods of time between vertical lines are called tranquil periods because the subject is not moving during these times (as far as the AcuSleep system can tell).Case 1: A great sleeper
This subject is a 48 year old woman who describes herself as a lifelong "great sleeper." Her husband volunteers that the subject is consistently asleep within two minutes after her head hits the pillow. Her AcuSleep test shows a remarkable lack of movement, in terms of position changes and in solo arm movements.Case 2: Severely disturbed sleep
This is a hard-charging, very busy, mildly overweight, middle-aged physician that gets little exercise and is "always tired."