# Definitions

Motion sensor graphs include 10-axis motion sensors for Insight and EPOC+ headsets:

* Quaternion 0, 1, 2, 3 - quaternion data in X, Y and Z directions and absolute quaternion values
* AccX, AccY and AccZ - accelerometer in X, Y and Z directions
* MagX, MagY and MagZ - magnetometer in X, Y and Z directions

Motion sensor graphs for older Insight and Epoc+ headsets (firmware < 0x633) include 9-axis motion data:

* GyroX, GyroY and GyroZ - gyroscope in X, Y and Z directions
* AccX, AccY and AccZ - accelerometer in X, Y and Z directions
* MagX, MagY and MagZ - magnetometer in X, Y and Z directions