TABLE 1.
Mean d′ score and percentage accuracy stratified by group: Control and persons with Parkinson’s disease (PD).
| Condition | Group |
d′
|
% accuracy
|
||
|---|---|---|---|---|---|
| M | SD | M | SD | ||
| FreqS | Control | 4.56 | 0.35 | 98.89 | 4.30 |
| PD | 2.99 | 1.56 | 68.25 | 36.65 | |
| FreqL | Control | 4.57 | 0.30 | 99.17 | 3.28 |
| PD | 4.27 | 0.81 | 93.75 | 18.07 | |
| AmpS | Control | 4.30 | 0.86 | 94.17 | 11.44 |
| PD | 3.08 | 1.15 | 74.26 | 24.64 | |
| AmpL | Control | 4.65 | 0 | 100.00 | 0 |
| PD | 4.44 | 0.76 | 97.92 | 7.22 | |
| DurS | Control | 4.19 | 0.96 | 92.50 | 10.35 |
| PD | 4.08 | 1.66 | 86.46 | 24.69 | |
| DurL | Control | 4.65 | 0 | 100.00 | 0 |
| PD | 4.35 | 1.20 | 95.83 | 14.43 | |
Note. FreqS = frequency with small perceptual distance, FreqL = frequency with large perceptual distance, AmpS = amplitude with small perceptual distance, AmpL = amplitude with large perceptual distance, DurS = duration with small perceptual distance, DurL = duration with large perceptual distance.