Table 5 Features were calculated from left shank accelerometer and gyroscope
From: Recognition of freezing of gait in Parkinson’s disease based on combined wearable sensors
Accelerometer x axis | Accelerometer y axis | Accelerometer z axis | Gyroscope x axis | Gyroscope y axis | Gyroscope z axis |
|---|---|---|---|---|---|
FI a | FI | FI | Power | Max | FI |
Variability | Min | Entropy | Energy | Range | Entropy |
Standard Deviation | Mean | Variability | Root mean Square | ||
Entropy | Entropy | Entropy | Entropy | ||
Principal direction eigenvalue | Principal Direction Eigenvalue | Principal Direction Eigenvalue | Standard Deviation | ||
Absolute Mean | Absolute Mean | ||||
Root Mean Square | Root Mean Square | ||||
Energy | Standard Deviation | ||||
Power | Min | ||||
Range | |||||
Max | |||||
Min |