Table 7.
References | Symptom | Tech | Sensors place | Rec. freq | Experimental design | Subjects | Feature extracted | Analysis / classifiers | Classifier performance or findings |
---|---|---|---|---|---|---|---|---|---|
Rissanen et al., 2009 | RIGIDITY | ACC, EMG | Wrists | 1,000 Hz | To flex and extend both the elbows vertically and freely in 2-s cycles with the palms up (1 s flexion and 1 s extension) | 49 PwPD, 59 HC | %REC, sample entropy, power of ACC, max power of all wavelet coefficients | t-Test, KW; Spearman correlation | Correlation (p < 0.01, R = −0.443) between the first PCs and total UPDRS motor scores in flexion. 73% sens., 82% spec. for flexion, 80% sens., 87% spec. for extension movements |