22 November 2025 : Clinical Research
McCollough and Watercolor Effects: Visual Illusions that Fade in Early Alzheimer’s Disease
Vaiva Sutnikiene
ABCDEF 1*, Gyte Pakulaite-Kazliene CDE 1, Egle Audronyte CDE 1, Justina Kuzmickaite DE 1, Gintaras Kaubrys ACDE 1
DOI: 10.12659/MSM.950194
Med Sci Monit 2025; 31:e950194
Figure 3 Differences in the McCollough effect between the 3 groups. (A) Number of vertical lines perceived as red in the 3 groups (no significant differences were observed; P>0.05); (B) number of horizontal lines perceived as green in the 3 groups. MD – mild dementia; MCI – mild cognitive impairment; CG – control group. Lines represent medians; boxes represent interquartile ranges; and error bars represent the minimum and maximum scores. Created using RStudio, version 1.2.5033 (RStudio, PBC, Boston, MA, USA).