Table 3 Summary of methods employed in signal analysis
From: Motor recovery monitoring using acceleration measurements in post acute stroke patients
Norm based | Signal Magnitude Area based | Energy based | |
|---|---|---|---|
Domain | Time | Time | Frequency |
Metric | Euclidean distance | Manhattan distance | Euclidean distance |
Activity measured | Cumulative velocity | Cumulative velocity of | Energy of activity |
average activity in x, y, and | in a 10 minute window | ||
z directions | |||
Calculation method | Every sample | Average value over 10 minutes | Window of 10 minutes |
Sensitivity | Low | High for normal patients and Low | High |
for severely disabled patients | |||
Computational | Low | Low | High |
complexity |