Figure 3.

Performance of all participants in experimental working memory task. (A) Precision of memory. Memory precision in all patients groups was significantly worse compared to healthy controls, patients with GBA-positive Parkinson’s disease (PD) performed significantly worse compared to all tested participants (**P < 0.025, *P < 0.05). (B) Distribution of responses around the probed orientation for patient groups and healthy participants. GBA carrier Parkinson’s disease patients made significantly less responses around the probed orientation, followed by individuals with GBA mutation and non-carrier patients with Parkinson’s disease compared to healthy controls. (C) Distribution of responses around non-probed orientations. Individuals with GBA mutation, with or without Parkinson’s disease made significantly more responses centred on non-probed orientations.