PMC

Number of PD patients in the PD Psy1+ group at each follow-up assessment. Y axis scaled to total number of patients with PD (n=423).

Cortical thickness differences between patients with formed hallucinations (PDPsy2+) compared to those without PD psychosis (PD-Psy0) on a surface rendered right hemisphere in lateral (left panel) and medial (right panel) view. Colour coding indicates cluster significance on a logarithmic scale of p values (−log₁₀).

The MoCA score trajectory prior to onset of PD psychosis (black circle) in subgroups of patients with PD psychosis onset at 1 year (green line), two years (red line) and three years (blue line). The trajectory of patients without PD psychosis (PD-Psy0) is shown in black. The slopes of MoCA decline do not differ between groups with and without PD psychosis (see text for further details).