ACTIGRAPHY

What is Actigraphy?

Actigraphy is a long-established method of measuring movement. Actigraphs use 3-axis accelerometers to detect the speed and direction of movement.

How do I measure movement?

Actigraphs can be placed in several positions on the body. However, they are usually placed on limbs that are used during physical activity (e.g., wrist, ankle) to differentiate from rest and non-rest periods.

How do I analyse the data?

The data output for actigraphy is very simple – did the device move or not? This is especially useful for estimating sleep/wake patterns.