Research Article

Pareidolia in Parkinson’s Disease and Multiple System Atrophy

Table 1

Demographic and clinical profiles of the participants.

GroupPDMSA value

Total no.4048
Sex (male/female)a23/1729/190.782
Age at the pareidolia test, y, median (range)b69.5 (47–82)66 (48–82)0.020
Disease duration, y, median (range)b6.65 (0.6–26.3)1.95 (0.7–8.6)<0.001
ACE-III total score, median (range)b91 (63–100)90 (58–97)0.491
 Attention/orientation, median (range)b17.5 (11–18)17 (12–18)0.287
 Memory, median (range)b23 (9–26)22.5 (10–26)0.787
 Fluency (mean ± SD)c9.8 ± 2.29.4 ± 2.20.429
 Language, median (range)b26 (20–26)26 (15–26)0.970
 Visuospatial, median (range)b15 (8–16)15 (6–16)0.325
FAB, median (range)b15 (9–18)14 (5–18)0.102
Pareidolia test
 Pareidolia, median (range)d0 (0–17)0 (0–4)0.001
 Missed, median (range)d0 (0-1)0 (0-2)0.492

PD: Parkinson’s disease; MSA: multiple system atrophy; ACE-III: Addenbrooke’s Cognitive Examination; SD: standard deviation; FAB: Frontal Assessment Battery. aχ2 test. bMann–Whitney U test. cStudent’s t-test. dAnalysis of covariance. Values in bold are statistically significant at p < 0.05.