Performance of gist-based recognition in study groups*
| NCs (n=28) | PD | ||
|---|---|---|---|
| Early (n=29) | Advanced (n=10) | ||
| List targets | |||
| Studied list† | 0.81±0.15 | 0.64±0.23‡ | 0.69±0.20 |
| Unstudied list | 0.15±0.17 | 0.16±0.21 | 0.20±0.12 |
| CTR (studied–unstudied)§ | 0.66±0.19 | 0.48±0.23‡ | 0.49±0.15‡ |
| Critical lure | |||
| Studied list | 0.65±0.20 | 0.55±0.25 | 0.54±0.24 |
| Unstudied list | 0.20±0.21 | 0.10±0.17 | 0.35±0.38 |
| Gist memory (studied lure–unstudied lure)§ | 0.46±0.25 | 0.45±0.30 | 0.19±0.35‡¶ |
| Item-specific memory (studied target–studied lure) | 0.16±0.20 | 0.09±0.22 | 0.16±0.23 |
| Unstudied target+unstudied lure | 0.35±0.36 | 0.26±0.35 | 0.55±0.38 |
*Results are expressed as mean ratio (probability of recognising item) ±SD.
†Kruskal-Wallis Test.
‡p<0.05 compared with normal controls.
§One-way analysis of variance with Fisher’s Least Significant Difference (LSD) test.
¶p<0.05 compared with early stage PD.
See table 1 and CTR, corrected target recognition rate.
NCs, normal controls; PD, Parkinson's disease.